chore(deps): update actions/cache action to v4 (#93)

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

Author: renovate[bot]

.github/workflows/build-and-test.yml

@@ -17,7 +17,7 @@ jobs:
       - uses: actions/checkout@v3
 
       - name: Cache rustup directory
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         env:
           cache-name: cache-rustup
         with:
@@ -45,7 +45,7 @@ jobs:
         run: cargo --version
 
       - name: Cache cargo directory
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         env:
           cache-name: cache-cargo
         with: