libchamplain: dependency changes
libchamplain: dependency changes

gtk+3 turns out to be a non-optional dependency

Closes #45117.

Signed-off-by: Mike McQuaid <a17fed27eaa842282862ff7c1b9c8395a26ac320@mikemcquaid.com>

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,osimola/homebrew,kevinastone/homebrew,iandennismiller/homebrew,marcwebbie/homebrew,recruit-tech/homebrew,blogabe/homebrew,3van/homebrew,Homebrew/linuxbrew,jiashuw/homebrew,hanxue/homebrew,joshua-rutherford/homebrew,dunn/homebrew,a-b/homebrew,dalanmiller/homebrew,jbeezley/homebrew,xyproto/homebrew,bigbes/homebrew,dutchcoders/homebrew,nelstrom/homebrew,SuperNEMO-DBD/cadfaelbrew,coldeasy/homebrew,changzuozhen/homebrew,reelsense/homebrew,filcab/homebrew,petere/homebrew,Homebrew/linuxbrew,frickler01/homebrew,eighthave/homebrew,kad/homebrew,drewwells/homebrew,yumitsu/homebrew,vihangm/homebrew,craig5/homebrew,lrascao/homebrew,gnubila-france/linuxbrew,aaronwolen/homebrew,ralic/homebrew,sferik/homebrew,hyuni/homebrew,keith/homebrew,megahall/homebrew,cprecioso/homebrew,aaronwolen/homebrew,dunn/homebrew,theeternalsw0rd/homebrew,davydden/linuxbrew,bitrise-io/homebrew,decors/homebrew,ilovezfs/homebrew,reelsense/homebrew,treyharris/homebrew,mmizutani/homebrew,tsaeger/homebrew,michaKFromParis/homebrew-sparks,Linuxbrew/linuxbrew,drbenmorgan/linuxbrew,yangj1e/homebrew,AlexejK/homebrew,royhodgman/homebrew,cscetbon/homebrew,georgschoelly/homebrew,menivaitsi/homebrew,ehamberg/homebrew,elgertam/homebrew,gnubila-france/linuxbrew,dplarson/homebrew,xyproto/homebrew,utzig/homebrew,deorth/homebrew,drbenmorgan/linuxbrew,heinzf/homebrew,teslamint/homebrew,Gasol/homebrew,emcrisostomo/homebrew,codeout/homebrew,haihappen/homebrew,bukzor/linuxbrew,mkrapp/homebrew,zeha/homebrew,elgertam/homebrew,Chilledheart/homebrew,theeternalsw0rd/homebrew,afh/homebrew,hongkongkiwi/homebrew,dkotvan/homebrew,apjanke/homebrew,tseven/homebrew,lvicentesanchez/linuxbrew,Angeldude/linuxbrew,afb/homebrew,sometimesfood/homebrew,jconley/homebrew,bigbes/homebrew,Chilledheart/homebrew,arg/homebrew,moyogo/homebrew,danieroux/homebrew,georgschoelly/homebrew,Habbie/homebrew,treyharris/homebrew,hakamadare/homebrew,frodeaa/homebrew,LinusU/homebrew,royhodgman/homebrew,jedahan/homebrew,colindean/homebrew,kvs/homebrew,yazuuchi/homebrew,frodeaa/homebrew,cosmo0920/homebrew,jiashuw/homebrew,ybott/homebrew,ilovezfs/homebrew,princeofdarkness76/homebrew,muellermartin/homebrew,felixonmars/homebrew,brunchboy/homebrew,mommel/homebrew,sometimesfood/homebrew,influxdata/homebrew,Red54/homebrew,zhipeng-jia/homebrew,amarshall/homebrew,getgauge/homebrew,DoomHammer/linuxbrew,influxdb/homebrew,xcezx/homebrew,jiashuw/homebrew,jsjohnst/homebrew,ericfischer/homebrew,felixonmars/homebrew,kodabb/homebrew,dunn/homebrew,liamstask/homebrew,ExtremeMan/homebrew,brotbert/homebrew,dunn/homebrew,hakamadare/homebrew,ge11232002/homebrew,kashif/homebrew,kvs/homebrew,slyphon/homebrew,hanxue/homebrew,ilovezfs/homebrew,patrickmckenna/homebrew,retrography/homebrew,LinusU/homebrew,Noctem/homebrew,tschoonj/homebrew,kenips/homebrew,Homebrew/linuxbrew,ablyler/homebrew,ablyler/homebrew,tstack/homebrew,Asuranceturix/homebrew,adamliter/homebrew,Red54/homebrew,Homebrew/homebrew,jsjohnst/homebrew,frickler01/homebrew,iostat/homebrew2,elgertam/homebrew,princeofdarkness76/homebrew,mobileoverlord/homebrew-1,elyscape/homebrew,jamer/homebrew,Habbie/homebrew,cscetbon/homebrew,joshua-rutherford/homebrew,gicmo/homebrew,alebcay/homebrew,polishgeeks/homebrew,ndimiduk/homebrew,ento/homebrew,megahall/homebrew,sometimesfood/homebrew,ebouaziz/linuxbrew,davydden/linuxbrew,thinker0/homebrew,vihangm/homebrew,frickler01/homebrew,ExtremeMan/homebrew,Angeldude/linuxbrew,jamer/homebrew,Chilledheart/homebrew,gnawhleinad/homebrew,lmontrieux/homebrew,tsaeger/homebrew,haihappen/homebrew,gnubila-france/linuxbrew,yangj1e/homebrew,treyharris/homebrew,adamliter/homebrew,MoSal/homebrew,Habbie/homebrew,benjaminfrank/homebrew,jiashuw/homebrew,cHoco/homebrew,Gasol/homebrew,kad/homebrew,dkotvan/homebrew,filcab/homebrew,MartinDelille/homebrew,jamer/homebrew,decors/homebrew,bchatard/homebrew,getgauge/homebrew,geoff-codes/homebrew,gicmo/homebrew,koraktor/homebrew,MartinDelille/homebrew,yazuuchi/homebrew,gvangool/homebrew,heinzf/homebrew,LonnyGomes/homebrew,bukzor/linuxbrew,chadcatlett/homebrew,ndimiduk/homebrew,SteveClement/homebrew,quantumsteve/homebrew,pcottle/homebrew,iandennismiller/homebrew,Noctem/homebrew,sjackman/linuxbrew,ablyler/homebrew,lvicentesanchez/linuxbrew,feelpp/homebrew,ybott/homebrew,jarrettmeyer/homebrew,adamliter/homebrew,haihappen/homebrew,saketkc/linuxbrew,gvangool/homebrew,manphiz/homebrew,okuramasafumi/homebrew,cosmo0920/homebrew,BrewTestBot/homebrew,retrography/homebrew,windoze/homebrew,ge11232002/homebrew,marcwebbie/homebrew,nandub/homebrew,vigo/homebrew,danieroux/homebrew,gawbul/homebrew,eagleflo/homebrew,afb/homebrew,reelsense/homebrew,AlexejK/homebrew,Linuxbrew/linuxbrew,danabrand/linuxbrew,arg/homebrew,mtigas/homebrew,dalanmiller/homebrew,keith/homebrew,mkrapp/homebrew,lmontrieux/homebrew,tutumcloud/homebrew,kenips/homebrew,Noctem/homebrew,3van/homebrew,menivaitsi/homebrew,utzig/homebrew,Angeldude/linuxbrew,bigbes/homebrew,dplarson/homebrew,max-horvath/homebrew,bitrise-io/homebrew,felixonmars/homebrew,martinklepsch/homebrew,amarshall/homebrew,afh/homebrew,mobileoverlord/homebrew-1,arg/homebrew,youtux/homebrew,dolfly/homebrew,jsjohnst/homebrew,alebcay/homebrew,mactkg/homebrew,craig5/homebrew,kashif/homebrew,base10/homebrew,danabrand/linuxbrew,coldeasy/homebrew,Asuranceturix/homebrew,windoze/homebrew,booi/homebrew,mmizutani/homebrew,jedahan/homebrew,colindean/homebrew,retrography/homebrew,LonnyGomes/homebrew,keith/homebrew,tstack/homebrew,muellermartin/homebrew,benjaminfrank/homebrew,lvicentesanchez/linuxbrew,a-b/homebrew,miketheman/homebrew,optikfluffel/homebrew,petere/homebrew,apjanke/homebrew,quantumsteve/homebrew,princeofdarkness76/homebrew,kad/homebrew,pdpi/homebrew,michaKFromParis/homebrew-sparks,MoSal/homebrew,osimola/homebrew,johanhammar/homebrew,1zaman/homebrew,iostat/homebrew2,mommel/homebrew,BrewTestBot/homebrew,nandub/homebrew,mactkg/homebrew,chadcatlett/homebrew,knpwrs/homebrew,grepnull/homebrew,ebouaziz/linuxbrew,xcezx/homebrew,hyuni/homebrew,polishgeeks/homebrew,esamson/homebrew,galaxy001/homebrew,heinzf/homebrew,Habbie/homebrew,pdpi/homebrew,brotbert/homebrew,knpwrs/homebrew,jmagnusson/homebrew,dalanmiller/homebrew,Asuranceturix/homebrew,tschoonj/homebrew,xcezx/homebrew