modernize (#393) #1637

Job	Run time
build (ubuntu-24.04, clang-18)	4m 23s
build-test-downstream (ubuntu-24.04, clang-18)	2m 15s
build (ubuntu-24.04, gcc-14)	4m 24s
build-test-downstream (ubuntu-24.04, gcc-14)	2m 20s
build (macos-13, clang-14)	6m 6s
build-test-downstream (macos-13, clang-14)	2m 22s
build (macos-14, armv8-clang-14)	3m 6s
build-test-downstream (macos-14, armv8-clang-14)	1m 37s
build (windows-2022, msvc-1940)	3m 46s
build-test-downstream (windows-2022, msvc-1940)	2m 47s
docker (ubuntu-24.04, clang-18)	19s
test (ubuntu-24.04, clang-18)	4m 30s
test (ubuntu-24.04, gcc-14)	4m 40s
test (macos-13, clang-14)	6m 23s
test (macos-14, armv8-clang-14)	4m 17s
	53m 15s

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