Bump actions/download-artifact from 5 to 6 #4227

Job	Run time
pre-commit / pre-commit	1m 14s
ubuntu / clang-build (ubuntu-24.04)	3m 1s
mac / clang-build (Release)	2m 46s
mac / clang-build (Debug)	2m 5s
ubuntu / clang-build (ubuntu-24.04-arm)	2m 8s
ubuntu / gcc-build (ubuntu-24.04, Debug)	2m 5s
ubuntu / gcc-build (ubuntu-24.04-arm, Release)	2m 6s
ubuntu / gcc-build (ubuntu-24.04-arm, Debug)	1m 42s
ubuntu / gcc-build (ubuntu-24.04, Release)	2m 19s
windows / msvc-build (Release)	4m 12s
windows / msvc-build (Debug)	3m 23s
windows / clang-build	5m 14s
mac / clang-test	5m 26s
ubuntu / clang-test (ubuntu-24.04-arm)	8m 30s
ubuntu / clang-test (ubuntu-24.04)	8m 26s
ubuntu / clang-sanitizer-build (ubuntu-24.04)	3m 24s
ubuntu / gcc-test (ubuntu-24.04)	8m 29s
ubuntu / gcc-test (ubuntu-24.04-arm)	8m 13s
windows / clang-test	3m 24s
windows / msvc-test	5m 12s
mac / clang-test-extended	3m 53s
windows / clang-test-extended	2m 46s
ubuntu / clang-sanitizer-test (ubuntu-24.04)	3m 8s
windows / msvc-test-extended	3m 5s
ubuntu / clang-test-extended (ubuntu-24.04-arm)	4m 30s
ubuntu / clang-test-extended (ubuntu-24.04)	4m 33s
ubuntu / gcc-test-extended (ubuntu-24.04)	4m 30s
ubuntu / gcc-test-extended (ubuntu-24.04-arm)	4m 46s
ubuntu / clang-sanitizer-test-extended (ubuntu-24.04)	2m 24s
ubuntu / gcc-build-codecov	7m 25s
perf / macos-clang-build-perf-stats	2m 59s
perf / ubuntu-gcc-build-perf-stats	1m 23s
pages / build-scoreboard	20s
pages / build-doxygen-xml	29s
pages / build-sphinx	47s
pages / deploy-pages	0s
	2h 10m 17s

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