Update CONTRIBUTING.md to broaden the intent of the contributor agreement #1778

Job	Run time
Update the docker container if it is modified	3s
gcc-14 \| Release	5h 31m 34s
gcc-14 \| Debug	2h 53m 16s
gcc-13 \| Release	1h 14m 36s
gcc-13 \| Debug	1h 13m 46s
clang-18, \| Release	1h 7m 58s
clang-18, \| Debug	1h 28m 23s
emcc \| Release	1h 35m 7s
emcc \| Debug	1h 21m 39s
	16h 26m 22s

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