Use FindGit for in CMake-based doc i18 checks #5008

Job	Run time
ci-scope	6s
pre-commit / link-check	13s
pre-commit / pre-commit	2m 1s
mac / clang-build (Debug)	2m 19s
ubuntu / clang-build (ubuntu-24.04)	2m 49s
ubuntu / gcc-build (ubuntu-24.04, Release)	2m 34s
ubuntu / gcc-build (ubuntu-24.04, Debug)	2m 10s
mac / clang-build (Release)	1m 55s
windows / clang-build	6m 7s
windows / msvc-build (Release)	1m 43s
windows / msvc-build (Debug)	3m 11s
mac / clang-test	1m 20s
ubuntu / gcc-test (ubuntu-24.04)	2m 52s
ubuntu / clang-test (ubuntu-24.04)	2m 39s
ubuntu / clang-sanitizer-build (ubuntu-24.04)	3m 28s
windows / msvc-test	1m 56s
mac / clang-test-extended	1m 11s
windows / msvc-test-extended	1m 26s
ubuntu / gcc-test-extended (ubuntu-24.04)	1m 41s
ubuntu / clang-test-extended (ubuntu-24.04)	1m 47s
windows / clang-test	2m 56s
ubuntu / clang-sanitizer-test (ubuntu-24.04)	1m 26s
ubuntu / gcc-build-codecov	3m 38s
ubuntu / clang-sanitizer-test-extended (ubuntu-24.04)	1m 0s
windows / clang-test-extended	1m 39s
perf / ubuntu-gcc-build-perf-stats	56s
perf / macos-clang-build-perf-stats	1m 38s
pages / build-doxygen-xml	16s
pages / build-scoreboard	14s
pages / build-sphinx	37s
pages / deploy-pages	0s
	57m 48s

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