build

Switch to monthly grouped GHA dependabot updates #1744

Job	Run time
Self-Check	13s
ensure-catalog-matches-hook-config	25s
test-sdist	1m 47s
'check-sdist' on py3.x	20s
'mypy' on py3.x	28s
'py-mindeps' on py3.10	42s
'twine-check' on py3.x	21s
Test on ubuntu, py3.13	2m 10s
Test on macos, py3.10	2m 11s
Test on ubuntu, py3.12	2m 5s
Test on ubuntu, py3.10	2m 17s
Test on windows, py3.11	3m 27s
Test on macos, py3.13	1m 32s
Test on windows, py3.12	3m 5s
Test on ubuntu, py3.14	1m 13s
Test on windows, py3.14	1m 58s
Test on ubuntu, py3.11	2m 0s
Test on macos, py3.12	1m 38s
Test on windows, py3.13	3m 14s
Test on macos, py3.14	1m 8s
Test on windows, py3.10	4m 43s
Test on macos, py3.11	1m 50s
Collate results to check for skipped tests	5s
	38m 52s

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