MAINT - Add new intermittent warning for building docs offline #313

Job	Run time
a11y-tests (ubuntu-latest, 3.12)	3m 55s
run-pytest (ubuntu-latest, 3.9)	1m 19s
build PST docs (ubuntu-latest, 3.12)	1m 16s
run-pytest (ubuntu-latest, 3.10)	1m 24s
build PST docs (macos-latest, 3.12)	2m 51s
run-pytest (ubuntu-latest, 3.11)	1m 30s
build PST docs (windows-latest, 3.12)	3m 22s
run-pytest (ubuntu-latest, 3.12)	1m 38s
build PST docs (ubuntu-latest, 3.9, 6.1)	1m 24s
run-pytest (ubuntu-24.04, 3.11)	1m 24s
run-pytest (ubuntu-24.04, 3.12)	1m 27s
run-pytest (macos-14, 3.10)	2m 29s
run-pytest (macos-14, 3.11)	2m 29s
run-pytest (macos-14, 3.12)	2m 34s
run-pytest (windows-latest, 3.9)	2m 57s
run-pytest (windows-latest, 3.10)	2m 13s
run-pytest (windows-latest, 3.11)	3m 6s
run-pytest (windows-latest, 3.12)	3m 12s
run-pytest (ubuntu-latest, 3.9, 6.1)	1m 41s
run-pytest (ubuntu-latest, 3.12, dev)	1m 57s
lighthouse-audit	4m 9s
profiling	25s
Check coverage	35s
	49m 17s

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