testsuite: expand testing in t0030-journal.py #3131

Job	Run time
spelling	6s
Generate build matrix	7s
validate commits	0s
python linting	34s
bookworm - test-install	5m 27s
bookworm - 32 bit	5m 27s
noble - test-install	5m 25s
el9 - test-install	5m 26s
alpine - test-install	5m 29s
fedora40 - test-install	5m 25s
jammy - test-install	5m 25s
focal - py3.8	5m 24s
bookworm - gcc-12,content-s3,distcheck	5m 29s
fedora40 - clang-18	5m 26s
coverage	5m 25s
el8 - ascii	5m 24s
el8 - system,coverage	5m 28s
inception	5m 24s
flux-sched check	4m 57s
flux-pmix check	4m 57s
flux-accounting check	4m 44s
flux-pam check	3m 55s
Generate docker manifest	1s
	1h 35m 25s

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