chore: pin GHA PM action version #5040

Job	Run time
Generate SDKs	3m 30s
Run tests and lints	31m 49s
Run end-to-end tests (postgres)	41m 14s
Run end-to-end tests (cockroach)	44m 20s
Run Playwright end-to-end tests (postgres)	6m 27s
Run end-to-end tests (sqlite)	43m 15s
Run Playwright end-to-end tests (cockroach)	6m 42s
Run end-to-end tests (mysql)	42m 38s
Run Playwright end-to-end tests (sqlite)	6m 2s
Run Playwright end-to-end tests (mysql)	6m 9s
Build CLI docs	1m 25s
Generate changelog	0s
Generate release	0s
Draft newsletter	0s
Render version schema	0s
Release SDKs	0s
Pending approval Slack notification	0s
Send newsletter	0s
	3h 53m 31s

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