ci: add lock-threads workflow #398

Job	Run time
test / Test (20, ubuntu-latest)	37s
test / Test (24, ubuntu-latest)	35s
test / Test (24, macos-latest)	43s
test / Test (22, macos-latest)	24s
test / Test (22, ubuntu-latest)	33s
test / quality-check / Lint Code	28s
test / Test (20, macos-latest)	29s
test / Test (22, windows-latest)	1m 4s
test / Test (24, windows-latest)	2m 10s
test / Test (20, windows-latest)	58s
test / quality-check / Check Licenses	24s
test / quality-check / Dependency Review	8s
test / Test Fastify Integration	0s
test / Automerge Dependabot PRs	-1s
	8m 32s

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