⬆️ deps: Update actions/cache action to v5

Author: renovate[bot]

.github/workflows/clippy.yml

@@ -21,7 +21,7 @@ jobs:
         with:
           toolchain: stable
           components: clippy
-      - uses: actions/cache@v4
+      - uses: actions/cache@v5
         id: cargo-cache
         with:
           path: |

.github/workflows/test.yml

@@ -18,7 +18,7 @@ jobs:
         uses: actions/checkout@v5
       - name: Update rust toolchain
         run: rustup update
-      - uses: actions/cache@v4
+      - uses: actions/cache@v5
         id: cargo-cache
         with:
           path: |