support duration update for running jobs #7754

Job	Run time
validate commits	9s
Generate build matrix	7s
python linting	52s
spelling	8s
bookworm	27m 1s
bookworm - 32 bit	30m 53s
bookworm - gcc-12,content-s3,distcheck	14m 47s
bookworm - py3.11,clang-15	12m 32s
coverage	36m 18s
jammy - test-install	9m 43s
bookworm - test-install	18m 35s
focal - py3.8	23m 23s
el8	34m 3s
el8 - ascii	14m 35s
el8 - system,coverage	10m 36s
fedora34 - gcc-11.2,py3.9	27m 37s
fedora38 - gcc-13.1,py3.11	12m 11s
inception	32m 9s
flux-pam check	3m 57s
flux-pmix check	13m 13s
flux-accounting check	7m 6s
flux-sched check	5m 54s
Generate docker manifest	1s
	5h 35m 50s

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