chore(deps): update leafwing-studios/cargo-cache action to v2 (#48)

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

.github/workflows/ci.yml

@@ -28,7 +28,7 @@ jobs:
           components: clippy
 
       - name: Cache rust build files
-        uses: Leafwing-Studios/cargo-cache@c7e8aa40ae2c975774d3bd766beb92927cfd7771 # v1
+        uses: Leafwing-Studios/cargo-cache@6c2a159aab4b3ba20f083d241bb1f26b35262b99 # v2
 
       - name: check (release)
         run: cargo check --workspace --all-targets --all-features --release