rcc

chore(deps): update actions/cache action to v4 #4251

Job	Run time
Collect suggests deps	16s
Smoke test: stock R	11m 50s
Check deps	0s
pkgdown	15m 51s
windows-latest (release)	12m 46s
macos-latest (release)	13m 18s
ubuntu-22.04 (release)	8m 10s
ubuntu-20.04 (release)	8m 0s
Without ${{ matrix.package }}	0s
ubuntu-22.04 (devel)	50m 3s
ubuntu-22.04 (release) with covr	10m 35s
ubuntu-22.04 (oldrel-1)	10m 23s
ubuntu-22.04 (oldrel-2)	9m 40s
ubuntu-22.04 (oldrel-3)	10m 28s
ubuntu-20.04 (release) SQL Server without covr	10m 45s
ubuntu-22.04 (release) Postgres with covr	12m 49s
ubuntu-22.04 (release) MariaDB with covr	12m 58s
ubuntu-22.04 (release) MySQL with covr	12m 25s
ubuntu-22.04 (release) DuckDB with covr	12m 41s
ubuntu-22.04 (release) SQLite with covr	12m 24s
	3h 55m 22s

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