CI: azure: Fix handling of 'skip azp'.
CI: azure: Fix handling of 'skip azp'.

Try removing newlines from the output of `git log`
before setting the `git_log` environment variable.

[skip actions]
[skip azp]

mdhaber/scipy,vigna/scipy,scipy/scipy,matthew-brett/scipy,e-q/scipy,anntzer/scipy,anntzer/scipy,mdhaber/scipy,WarrenWeckesser/scipy,ilayn/scipy,andyfaff/scipy,andyfaff/scipy,e-q/scipy,grlee77/scipy,andyfaff/scipy,Eric89GXL/scipy,mdhaber/scipy,Eric89GXL/scipy,endolith/scipy,tylerjereddy/scipy,perimosocordiae/scipy,scipy/scipy,grlee77/scipy,WarrenWeckesser/scipy,mdhaber/scipy,andyfaff/scipy,perimosocordiae/scipy,rgommers/scipy,scipy/scipy,ilayn/scipy,scipy/scipy,WarrenWeckesser/scipy,vigna/scipy,WarrenWeckesser/scipy,rgommers/scipy,Stefan-Endres/scipy,endolith/scipy,mdhaber/scipy,Stefan-Endres/scipy,andyfaff/scipy,matthew-brett/scipy,rgommers/scipy,e-q/scipy,zerothi/scipy,perimosocordiae/scipy,perimosocordiae/scipy,Stefan-Endres/scipy,endolith/scipy,e-q/scipy,matthew-brett/scipy,endolith/scipy,Stefan-Endres/scipy,vigna/scipy,vigna/scipy,vigna/scipy,zerothi/scipy,endolith/scipy,grlee77/scipy,Stefan-Endres/scipy,WarrenWeckesser/scipy,perimosocordiae/scipy,rgommers/scipy,scipy/scipy,zerothi/scipy,tylerjereddy/scipy,WarrenWeckesser/scipy,grlee77/scipy,tylerjereddy/scipy,tylerjereddy/scipy,ilayn/scipy,ilayn/scipy,Eric89GXL/scipy,andyfaff/scipy,rgommers/scipy,anntzer/scipy,zerothi/scipy,Eric89GXL/scipy,ilayn/scipy,mdhaber/scipy,perimosocordiae/scipy,matthew-brett/scipy,ilayn/scipy,anntzer/scipy,zerothi/scipy,scipy/scipy,anntzer/scipy,anntzer/scipy,Eric89GXL/scipy,endolith/scipy,Eric89GXL/scipy,tylerjereddy/scipy,e-q/scipy,zerothi/scipy,Stefan-Endres/scipy,matthew-brett/scipy,grlee77/scipy