Consider rust-specific cache action

[iliekturtles]

Instead of manual cache setup, consider a rust-specific action like https://github.com/Swatinem/rust-cache. What do other crates do for caching?

uom/.github/workflows/ci-full-test-suite.yml

Lines 19 to 30 in d4f08de

	# Cache based on OS/compiler.
	- name: Extract cache
	uses: actions/cache@v3
	with:
	path: |
	~/.cargo
	!~/.cargo/registry/index
	!~/.cargo/git/checkouts
	target
	!target/tests
	!target/examples
	key: ${{ runner.os }}-${{ steps.install-rust.outputs.cachekey }}

[adamreichold]

What do other crates do for caching?

As examples, PyO3 and Tantivy just use Swatinem's rust-cache.