Update swatinem/rust-cache action to v2.8.0 (#178)

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

Author: renovate[bot]

.github/workflows/rust.yml

@@ -27,7 +27,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Cache build artifacts
-        uses: swatinem/rust-cache@v2.7.8
+        uses: swatinem/rust-cache@v2.8.0
         with:
           prefix-key: cargo-1.87.0
 
@@ -63,7 +63,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Cache build artifacts
-        uses: swatinem/rust-cache@v2.7.8
+        uses: swatinem/rust-cache@v2.8.0
         with:
           prefix-key: cargo-1.87.0