fix(git/environment): use $gitBin if set
fix(git/environment): use $gitBin if set

shimikano/kirby-git-commit-and-push-content,blankogmbh/kirby-git-commit-and-push-content,blankogmbh/kirby-git-commit-and-push-content,shimikano/kirby-git-commit-and-push-content