chore(deps): update swatinem/rust-cache action to v2 (#49)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/ci.yaml

@@ -15,7 +15,7 @@ jobs:
         uses: actions/checkout@v3
 
       - name: Cache Rust
-        uses: Swatinem/rust-cache@v1
+        uses: Swatinem/rust-cache@v2
 
       - name: Test Rust
         run: |