Bump docker/build-push-action from 4 to 6 #3261

Job	Run time
lint / clang-format	16s
lint / python-lint	7s
lint / shell-lint	9s
windows / clang-build	2m 24s
ubuntu / gcc-build (ubuntu-24.04-arm, Debug)	1m 56s
ubuntu / clang-build (ubuntu-24.04)	1m 39s
ubuntu / gcc-build (ubuntu-24.04-arm, Release)	3m 37s
ubuntu / gcc-build (ubuntu-24.04, Release)	2m 0s
ubuntu / gcc-build (ubuntu-24.04, Debug)	2m 38s
ubuntu / clang-build (ubuntu-24.04-arm)	2m 1s
mac / clang-build (Debug)	2m 21s
windows / msvc-build (Release)	3m 28s
windows / msvc-build (Debug)	5m 16s
mac / clang-build (Release)	2m 1s
mac / clang-test	3m 12s
mac / clang-test-extended	2m 11s
windows / clang-test	1m 50s
windows / clang-test-extended	2m 17s
windows / msvc-test	3m 0s
ubuntu / clang-test (ubuntu-24.04-arm)	6m 7s
ubuntu / clang-sanitizer-build (ubuntu-24.04)	1m 26s
ubuntu / clang-test (ubuntu-24.04)	5m 50s
ubuntu / gcc-test (ubuntu-24.04-arm)	6m 13s
ubuntu / gcc-test (ubuntu-24.04)	5m 0s
ubuntu / clang-sanitizer-test (ubuntu-24.04)	2m 3s
ubuntu / clang-test-extended (ubuntu-24.04)	3m 1s
ubuntu / clang-test-extended (ubuntu-24.04-arm)	4m 21s
ubuntu / clang-sanitizer-test-extended (ubuntu-24.04)	1m 56s
ubuntu / gcc-test-extended (ubuntu-24.04)	2m 51s
ubuntu / gcc-test-extended (ubuntu-24.04-arm)	3m 12s
windows / msvc-test-extended	2m 14s
ubuntu / gcc-build-codecov	4m 3s
perf / ubuntu-gcc-build-perf-stats	1m 37s
pages / build-scoreboard	15s
pages / build-doxygen-xml	1m 0s
pages / build-sphinx	1m 18s
pages / deploy-pages	0s
	1h 34m 50s

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