Update actions/cache version to v4

Author: daniel-zint

.github/workflows/continuous.yml

@@ -47,7 +47,7 @@ jobs:
 
       - name: Cache Build
         id: cache-build
-        uses: actions/cache@v4.0.0
+        uses: actions/cache@v4
         with:
           path: ${{ env.CACHE_PATH }}
           key: ${{ runner.os }}-${{ matrix.config }}-cache
@@ -97,7 +97,7 @@ jobs:
 
       - name: Cache build
         id: cache-build
-        uses: actions/cache@v4.0.0
+        uses: actions/cache@v4
         with:
           path: ${{ env.appdata }}\Mozilla\sccache
           key: ${{ runner.os }}-${{ matrix.config }}-cache