chore: Update Docker actions to specific versions for improved stability

Author: MichaelsJP

.github/workflows/build-docker-images.yml

@@ -133,7 +133,7 @@ jobs:
 
       - name: Set up Docker Buildx
         if: steps.should_skip.outputs.skip != 'true'
-        uses: docker/setup-buildx-action@v3
+        uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 #v3.11.1
         id: buildx
 
       - name: Setup Java and Maven
@@ -184,7 +184,7 @@ jobs:
 
       - name: Build ${{ matrix.image_stage }} image stage for ${{ matrix.name }}
         if: steps.should_skip.outputs.skip != 'true'
-        uses: docker/build-push-action@v6
+        uses: docker/build-push-action@263435318d21b8e681c14492fe198d362a7d2c83 #v6.18.0
         with:
           context: .
           build-args: MAVEN_OPTS=-Dmaven.repo.local=/root/.m2/repository