Bump Swatinem/rust-cache from 2.2.0 to 2.2.1 (#51)

Bumps [Swatinem/rust-cache](https://github.com/Swatinem/rust-cache) from 2.2.0 to 2.2.1.
- [Release notes](https://github.com/Swatinem/rust-cache/releases)
- [Changelog](https://github.com/Swatinem/rust-cache/blob/master/CHANGELOG.md)
- [Commits](Swatinem/rust-cache@359a70e...6fd3edf)

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

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

.github/workflows/rust.yml

@@ -30,7 +30,7 @@ jobs:
             components: rustfmt
 
       - name: Rust Cache
-        uses: Swatinem/rust-cache@359a70e43a0bb8a13953b04a90f76428b4959bb6 # v2.2.0
+        uses: Swatinem/rust-cache@6fd3edff6979b79f87531400ad694fb7f2c84b1f # v2.2.1
 
       - name: Cargo fmt
         uses: actions-rs/cargo@v1.0.3
@@ -53,7 +53,7 @@ jobs:
           override: true
 
       - name: Rust Cache
-        uses: Swatinem/rust-cache@359a70e43a0bb8a13953b04a90f76428b4959bb6 # v2.2.0
+        uses: Swatinem/rust-cache@6fd3edff6979b79f87531400ad694fb7f2c84b1f # v2.2.1
 
       - name: Check internal documentation links
         run: RUSTDOCFLAGS="--deny rustdoc::broken_intra_doc_links" cargo doc -vv --workspace --no-deps --document-private-items
@@ -79,7 +79,7 @@ jobs:
           override: true
 
       - name: Rust Cache
-        uses: Swatinem/rust-cache@359a70e43a0bb8a13953b04a90f76428b4959bb6 # v2.2.0
+        uses: Swatinem/rust-cache@6fd3edff6979b79f87531400ad694fb7f2c84b1f # v2.2.1
 
       - name: Cargo test
         uses: actions-rs/cargo@v1.0.3
@@ -103,7 +103,7 @@ jobs:
             override: true
 
       - name: Rust Cache
-        uses: Swatinem/rust-cache@359a70e43a0bb8a13953b04a90f76428b4959bb6 # v2.2.0
+        uses: Swatinem/rust-cache@6fd3edff6979b79f87531400ad694fb7f2c84b1f # v2.2.1
 
       - name: Run clippy
         uses: actions-rs/cargo@v1
@@ -128,7 +128,7 @@ jobs:
             override: true
 
       - name: Rust Cache
-        uses: Swatinem/rust-cache@359a70e43a0bb8a13953b04a90f76428b4959bb6 # v2.2.0
+        uses: Swatinem/rust-cache@6fd3edff6979b79f87531400ad694fb7f2c84b1f # v2.2.1
 
       - name: Install cargo-hack
         uses: baptiste0928/cargo-install@v1
@@ -158,7 +158,7 @@ jobs:
             override: true
 
       - name: Rust Cache
-        uses: Swatinem/rust-cache@359a70e43a0bb8a13953b04a90f76428b4959bb6 # v2.2.0
+        uses: Swatinem/rust-cache@6fd3edff6979b79f87531400ad694fb7f2c84b1f # v2.2.1
 
       - name: Install cargo-hack
         uses: baptiste0928/cargo-install@v1