chore(ci): login to chainguard for trivy build

Author: fyzanshaik-atlan

.github/workflows/trivy.yml

@@ -24,6 +24,13 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
+      - name: Log in to Chainguard Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: cgr.dev
+          username: ${{ secrets.CHAINGUARD_USERNAME }}
+          password: ${{ secrets.CHAINGUARD_PASSWORD }}
+
       - name: Build image
         uses: docker/build-push-action@v6
         with: