Update Swatinem/rust-cache action to v2.8.1

Author: renovate[bot]

.github/workflows/release.yml

@@ -47,7 +47,7 @@ jobs:
           target: x86_64-pc-windows-gnu
 
       - name: cache dependencies
-        uses: Swatinem/rust-cache@v2.8.0
+        uses: Swatinem/rust-cache@v2.8.1
 
       - name: clippy check
         uses: sksat/action-clippy@v1.1.1

.github/workflows/review.yml

@@ -25,7 +25,7 @@ jobs:
           override: true
 
       - name: cache dependencies
-        uses: Swatinem/rust-cache@v2.8.0
+        uses: Swatinem/rust-cache@v2.8.1
 
       - name: clippy check
         uses: actions-rs/clippy-check@v1.0.7