support duration update for running jobs #7755

Job	Run time
validate commits	14s
Generate build matrix	7s
python linting	46s
spelling	5s
bookworm	26m 3s
bookworm - 32 bit	24m 53s
bookworm - gcc-12,content-s3,distcheck	35m 21s
bookworm - py3.11,clang-15	27m 49s
coverage	24m 2s
jammy - test-install	9m 41s
bookworm - test-install	20m 18s
focal - py3.8	19m 21s
el8	15m 12s
el8 - ascii	14m 30s
el8 - system,coverage	11m 1s
fedora34 - gcc-11.2,py3.9	13m 8s
fedora38 - gcc-13.1,py3.11	5m 29s
inception	29m 56s
flux-pmix check	19m 46s
flux-accounting check	5m 23s
flux-pam check	4m 16s
flux-sched check	10m 24s
Generate docker manifest	1s
	5h 17m 46s

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