Downgrade ubuntu #2518

Job	Run time
test (macos-latest)	2m 7s
test (ubuntu-24.04-arm)	3m 46s
Build and test executables (ubuntu-latest)	1m 22s
Build and test executables (windows-latest)	2m 51s
Build and test executables (ubuntu-24.04-arm)	1m 25s
test (ubuntu-latest)	3m 19s
test (windows-latest)	11m 6s
Build and test executables (macos-latest)	59s
	26m 55s

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