reenabled sccache, bumped version

Author: Max Weidauer

.github/workflows/build_test_artifacts.yml

@@ -85,8 +85,8 @@ jobs:
           fetch-depth: 0
 
       # We cache the build to speed up the build process
-      # - name: cache the build
-      #   uses: mozilla-actions/sccache-action@v0.0.9
+      - name: cache the build
+        uses: mozilla-actions/sccache-action@v0.0.9
 
       # Typical cmake configuration with default generator
       # With DCMAKE_OSX_ARCHITECTURES="arm64;x86_64" we can build universal binaries for apple computers