Add dependabot & Fix sccache fail in CI (#1451)

* - Prevent sponsor.yml running on fork repos
- Use gcr mirror for docker image pull
- Add dependabot

* Update sccache version & adjust for github change & fix foundationdb pkg download url

.github/workflows/ci.yml

@@ -157,6 +157,9 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
         with:
+          buildkitd-config-inline: |
+            [registry."docker.io"]
+              mirrors = ["https://mirror.gcr.io"]
           driver-opts: |
             network=host
 
@@ -301,7 +304,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Run sccache-cache
-        uses: mozilla-actions/sccache-action@v0.0.7
+        uses: mozilla-actions/sccache-action@v0.0.9
         with:
           disable_annotations: true
 
@@ -334,7 +337,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Run sccache-cache
-        uses: mozilla-actions/sccache-action@v0.0.7
+        uses: mozilla-actions/sccache-action@v0.0.9
         with:
           disable_annotations: true
 
@@ -344,7 +347,7 @@ jobs:
         run: |
           rustup target add ${{matrix.target}}
           # Get latest FoundationDB installer
-          curl --retry 5 -Lso foundationdb.pkg "$(gh api -X GET /repos/apple/foundationdb/releases --jq '.[] | select(.prerelease == false) | .assets[] | select(.name | test("${{startsWith(matrix.target, 'x86') && 'x86_64' || 'arm64'}}" + ".pkg")) | .browser_download_url' | head -n1)"
+          curl --retry 5 -Lso foundationdb.pkg "$(gh api -X GET /repos/apple/foundationdb/releases --jq '.[] | select(.prerelease == false) | .assets[] | select(.name | test("${{startsWith(matrix.target, 'x86') && 'x86_64' || 'arm64'}}" + ".pkg$")) | .browser_download_url' | head -n1)"
           sudo installer -allowUntrusted -dumplog -pkg foundationdb.pkg -target /
           cargo build --release --target ${{matrix.target}} -p mail-server --no-default-features --features "foundationdb elastic s3 redis enterprise"
           mkdir -p artifacts

.github/workflows/sponsors.yml

@@ -7,6 +7,7 @@ permissions:
   contents: write
 jobs:
   deploy:
+    if: github.event_name != 'schedule' || !github.event.repository.fork
     runs-on: ubuntu-latest
     steps:
       - name: Checkout 🛎️