Fedora 40 support #256

Job	Run time
Clippy nightly (optional)	32s
Clippy	33s
Clang Tidy	11s
Build+test (stable, ubuntu-24.04)	1m 43s
Check for documentation errors	39s
Miri	1m 0s
Build+test (stable, ubuntu-22.04)	1m 49s
Format	12s
Build+test (beta, ubuntu-24.04)	2m 20s
Packaging	3m 41s
Build+test (beta, ubuntu-22.04)	1m 41s
Valgrind	2m 13s
Build+test (nightly, ubuntu-24.04)	1m 45s
Produce release packages (fedora, 40, rpm)	3m 16s
Build+test (nightly, ubuntu-22.04)	1m 44s
Produce release packages (ubuntu, 24.04, deb)	2m 19s
	25m 38s

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