configure: add check for valid version #77

Job	Run time
Generate build matrix	8s
python linting	28s
validate commits	0s
spelling	8s
bookworm - test-install	12m 15s
bookworm - 32 bit	13m 5s
noble - test-install	12m 30s
el9 - test-install	12m 43s
alpine - test-install	13m 35s
fedora40 - test-install	12m 40s
jammy - test-install	11m 40s
focal - py3.8	16m 41s
bookworm - gcc-12,content-s3,distcheck	19m 12s
fedora40 - clang-18	16m 49s
coverage	24m 20s
el8 - ascii	19m 43s
el8 - system,coverage	7m 41s
inception	22m 28s
flux-accounting check	4m 30s
flux-pam check	3m 43s
flux-sched check	7m 15s
flux-pmix check	13m 4s
Generate docker manifest	0s
	4h 4m 38s

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