[CI] Bump Swatinem/rust-cache from 2.7.2 to 2.7.3 (#784)

Bumps [Swatinem/rust-cache](https://github.com/swatinem/rust-cache) from 2.7.2 to 2.7.3.
- [Release notes](https://github.com/swatinem/rust-cache/releases)
- [Changelog](https://github.com/Swatinem/rust-cache/blob/master/CHANGELOG.md)
- [Commits](Swatinem/rust-cache@a226033...23bce25)

---
updated-dependencies:
- dependency-name: Swatinem/rust-cache
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/ci.yml

@@ -127,7 +127,7 @@ jobs:
           components: clippy, rust-src ${{ matrix.toolchain == 'nightly' && ', miri' || '' }}
 
     - name: Rust Cache
-      uses: Swatinem/rust-cache@a22603398250b864f7190077025cf752307154dc # v2.7.2
+      uses: Swatinem/rust-cache@23bce251a8cd2ffc3c1075eaa2367cf899916d84 # v2.7.3
       with:
         key: "${{ matrix.target }}"