Bump Swatinem/rust-cache from 1.3.0 to 1.4.0 (#117)

Bumps [Swatinem/rust-cache](https://github.com/Swatinem/rust-cache) from 1.3.0 to 1.4.0.
- [Release notes](https://github.com/Swatinem/rust-cache/releases)
- [Changelog](https://github.com/Swatinem/rust-cache/blob/v1/CHANGELOG.md)
- [Commits](Swatinem/rust-cache@v1.3.0...v1.4.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

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

.github/workflows/rust.yml

@@ -54,7 +54,7 @@ jobs:
           components:  clippy, rustfmt
           override:    true
 
-      - uses:          Swatinem/rust-cache@v1.3.0
+      - uses:          Swatinem/rust-cache@v1.4.0
 
       - name:          Cache sccache
         uses:          actions/[email protected]
@@ -124,7 +124,7 @@ jobs:
           components:  clippy, rustfmt
           override:    true
 
-      - uses:          Swatinem/rust-cache@v1.3.0
+      - uses:          Swatinem/rust-cache@v1.4.0
 
       - name:          Cache sccache
         uses:          actions/[email protected]
@@ -205,7 +205,7 @@ jobs:
           components:  clippy, rustfmt
           override:    true
 
-      - uses:          Swatinem/rust-cache@v1.3.0
+      - uses:          Swatinem/rust-cache@v1.4.0
 
       - name:          Cache sccache
         uses:          actions/[email protected]