configure: add check for valid version #79

Job	Run time
Generate build matrix	9s
spelling	4s
python linting	29s
validate commits	0s
bookworm - test-install	11m 53s
bookworm - 32 bit	12m 52s
noble - test-install	12m 16s
el9 - test-install	12m 40s
alpine - test-install	11m 58s
fedora40 - test-install	12m 18s
jammy - test-install	11m 58s
focal - py3.8	16m 49s
bookworm - gcc-12,content-s3,distcheck	19m 31s
fedora40 - clang-18	16m 50s
coverage	23m 52s
el8 - ascii	19m 20s
el8 - system,coverage	7m 35s
inception	22m 30s
flux-pam check	3m 36s
flux-pmix check	12m 16s
flux-accounting check	4m 35s
flux-sched check	6m 58s
Generate docker manifest	1s
	4h 0m 30s

Provide feedback