minor #22891 [travis] Fix 3/4 cross tests (nicolas-grekas)
minor #22891 [travis] Fix 3/4 cross tests (nicolas-grekas)

This PR was merged into the 3.4 branch.

Discussion
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[travis] Fix 3/4 cross tests

| Q             | A
| ------------- | ---
| Branch?       | 3.4
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | needs #22892
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

I just realized that using 7.0 to run deps=high test prevents loading 4.0 versions of deps.

Commits
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6311be7 [travis] Fix 3/4 cross tests

WhiteEagle88/symfony,MatTheCat/symfony,Triiistan/symfony,Pierstoval/symfony,ragboyjr/symfony,Taluu/symfony,josephdpurcell/symfony,Slamdunk/symfony,ragboyjr/symfony,jvasseur/symfony,zorn-v/symfony,romaricdrigon/symfony,curry684/symfony,localheinz/symfony,voronkovich/symfony,jzawadzki/symfony,WhiteEagle88/symfony,Einenlum/symfony,MatTheCat/symfony,smatyas/symfony,pyrech/symfony,Engerim/symfony,HeahDude/symfony,dunglas/symfony,Tobion/symfony,andreia/symfony,damienalexandre/symfony,DavidGarciaCat/symfony,maidmaid/symfony,ro0NL/symfony,nicolas-grekas/symfony,damienalexandre/symfony,Simperfit/symfony,phramz/symfony,weaverryan/symfony,Deamon/symfony,hason/symfony,ajgarlag/symfony,jvasseur/symfony,Engerim/symfony,tgalopin/symfony,arjenm/symfony,jzawadzki/symfony,paradajozsef/symfony,gencer/symfony,bendavies/symfony,lepiaf/symfony,localheinz/symfony,jean-gui/symfony,teohhanhui/symfony,stof/symfony,mnapoli/symfony,weaverryan/symfony,oleg-andreyev/symfony,dmaicher/symfony,iltar/symfony,pierredup/symfony,symfony/symfony,Koc/symfony,Deamon/symfony,nicolas-grekas/symfony,damienalexandre/symfony,deguif/symfony,mpdude/symfony,voronkovich/symfony,lyrixx/symfony,bendavies/symfony,derrabus/symfony,ogizanagi/symfony,aeoris/symfony,phramz/symfony,alekitto/symfony,frankdejonge/symfony,bendavies/symfony,mnapoli/symfony,jean-gui/symfony,d-ph/symfony,andrerom/symfony,dmaicher/symfony,deguif/symfony,mweimerskirch/symfony,sgehrig/symfony,curry684/symfony,mnapoli/symfony,Strate/symfony,Taluu/symfony,Amo/symfony,WhiteEagle88/symfony,iltar/symfony,alekitto/symfony,Engerim/symfony,nicolas-grekas/symfony,yceruto/symfony,frankdejonge/symfony,Simperfit/symfony,shieldo/symfony,mnapoli/symfony,localheinz/symfony,maidmaid/symfony,ogizanagi/symfony,pyrech/symfony,derrabus/symfony,Slamdunk/symfony,jderusse/symfony,Triiistan/symfony,Taluu/symfony,docteurklein/symfony,paradajozsef/symfony,shieldo/symfony,codeclimate-testing/symfony,shieldo/symfony,lepiaf/symfony,Koc/symfony,gimler/symfony,pamil/symfony,kbond/symfony,smatyas/symfony,xabbuh/symfony,paradajozsef/symfony,jakzal/symfony,chalasr/symfony,michaelperrin/symfony,aeoris/symfony,smatyas/symfony,gonzalovilaseca/symfony,vincentaubert/symfony,frankdejonge/symfony,jzawadzki/symfony,Koc/symfony,andreia/symfony,garak/symfony,Strate/symfony,gencer/symfony,Pierstoval/symfony,garak/symfony,teohhanhui/symfony,fabpot/symfony,HeahDude/symfony,zerkms/symfony,localheinz/symfony,codeclimate-testing/symfony,teohhanhui/symfony,mweimerskirch/symfony,gimler/symfony,iltar/symfony,Slamdunk/symfony,bendavies/symfony,zorn-v/symfony,Taluu/symfony,smatyas/symfony,Tobion/symfony,apetitpa/symfony,maidmaid/symfony,Pierstoval/symfony,deguif/symfony,tucksaun/symfony,andrerom/symfony,Amo/symfony,lstrojny/symfony,derrabus/symfony,alekitto/symfony,yceruto/symfony,Pierstoval/symfony,lyrixx/symfony,ro0NL/symfony,Aliance/symfony,fabpot/symfony,ragboyjr/symfony,stof/symfony,zorn-v/symfony,e-moe/symfony,Deamon/symfony,mnapoli/symfony,romaricdrigon/symfony,pyrech/symfony,DavidGarciaCat/symfony,codeclimate-testing/symfony,jean-gui/symfony,tucksaun/symfony,dunglas/symfony,nasimnabavi/symfony,HeahDude/symfony,zerkms/symfony,smatyas/symfony,xabbuh/symfony,Deamon/symfony,zcodes/symfony,andrerom/symfony,lyrixx/symfony,symfony/symfony,michaelperrin/symfony,sgehrig/symfony,1ed/symfony,hason/symfony,michaelperrin/symfony,hhamon/symfony,nicolas-grekas/symfony,ajgarlag/symfony,curry684/symfony,michaelperrin/symfony,docteurklein/symfony,zcodes/symfony,xabbuh/symfony,hhamon/symfony,symfony/symfony,Amo/symfony,shieldo/symfony,gnat42/symfony,hason/symfony,zcodes/symfony,hacfi/symfony,mpdude/symfony,gonzalovilaseca/symfony,josephdpurcell/symfony,OskarStark/symfony,backbone87/symfony,pamil/symfony,gonzalovilaseca/symfony,maidmaid/symfony,arjenm/symfony,vincentaubert/symfony,ajgarlag/symfony,tgalopin/symfony,andreia/symfony,Triiistan/symfony,arjenm/symfony,ro0NL/symfony,damienalexandre/symfony,jean-gui/symfony,ogizanagi/symfony,OskarStark/symfony,gnat42/symfony,Koc/symfony,c960657/symfony,jakzal/symfony,mpdude/symfony,c960657/symfony,sgehrig/symfony,kbond/symfony,jderusse/symfony,hacfi/symfony,Triiistan/symfony,romaricdrigon/symfony,jderusse/symfony,frankdejonge/symfony,lstrojny/symfony,apetitpa/symfony,jderusse/symfony,Nyholm/symfony,Nyholm/symfony,Amo/symfony,Einenlum/symfony,pierredup/symfony,joelwurtz/symfony,nasimnabavi/symfony,kbond/symfony,gnat42/symfony,Simperfit/symfony,e-moe/symfony,joelwurtz/symfony,weaverryan/symfony,Tobion/symfony,hacfi/symfony,d-ph/symfony,garak/symfony,pierredup/symfony,mweimerskirch/symfony,codeclimate-testing/symfony,oleg-andreyev/symfony,stof/symfony,fabpot/symfony,yceruto/symfony,jvasseur/symfony,curry684/symfony,yceruto/symfony,Aliance/symfony,Aliance/symfony,gimler/symfony,Triiistan/symfony,ro0NL/symfony,MatTheCat/symfony,stof/symfony,vincentaubert/symfony,1ed/symfony,fabpot/symfony,chalasr/symfony,apetitpa/symfony,sroze/symfony,c960657/symfony,Simperfit/symfony,jakzal/symfony,aeoris/symfony,e-moe/symfony,jvasseur/symfony,lyrixx/symfony,andreia/symfony,ogizanagi/symfony,chalasr/symfony,tucksaun/symfony,oleg-andreyev/symfony,deguif/symfony,ragboyjr/symfony,vincentaubert/symfony,d-ph/symfony,OskarStark/symfony,mpdude/symfony,OskarStark/symfony,joelwurtz/symfony,tgalopin/symfony,teohhanhui/symfony,backbone87/symfony,joelwurtz/symfony,pamil/symfony,Amo/symfony,voronkovich/symfony,garak/symfony,symfony/symfony,tgalopin/symfony,mweimerskirch/symfony,d-ph/symfony,derrabus/symfony,arjenm/symfony,backbone87/symfony,phramz/symfony,mweimerskirch/symfony,gnat42/symfony,zcodes/symfony,nasimnabavi/symfony,e-moe/symfony,DavidGarciaCat/symfony,weaverryan/symfony,1ed/symfony,Slamdunk/symfony,Strate/symfony,hhamon/symfony,phramz/symfony,chalasr/symfony,Einenlum/symfony,nasimnabavi/symfony,iltar/symfony,alekitto/symfony,josephdpurcell/symfony,gencer/symfony,xabbuh/symfony,docteurklein/symfony,zerkms/symfony,voronkovich/symfony,andrerom/symfony,pamil/symfony,Nyholm/symfony,1ed/symfony,sroze/symfony,c960657/symfony,zerkms/symfony,dmaicher/symfony,tucksaun/symfony,ajgarlag/symfony,hhamon/symfony,gonzalovilaseca/symfony,paradajozsef/symfony,Simperfit/symfony,docteurklein/symfony,pyrech/symfony,lepiaf/symfony,gimler/symfony,MatTheCat/symfony,Einenlum/symfony,romaricdrigon/symfony,sroze/symfony,pierredup/symfony,Nyholm/symfony,apetitpa/symfony,dunglas/symfony,oleg-andreyev/symfony,Deamon/symfony,sgehrig/symfony,jakzal/symfony,lstrojny/symfony,HeahDude/symfony,sroze/symfony,docteurklein/symfony,dmaicher/symfony,kbond/symfony,zorn-v/symfony,Tobion/symfony