fix(layers): pinned github actions

Author: rubenfonseca

.github/workflows/publish_v2_layer.yml

@@ -52,10 +52,10 @@ jobs:
           RELEASE_TAG_VERSION=${RELEASE_INPUT:-$LATEST_TAG}
           echo RELEASE_TAG_VERSION="${RELEASE_TAG_VERSION:1}" >> "$GITHUB_ENV"
       - name: Set up QEMU
-        uses: docker/setup-qemu-action@v2
+        uses: docker/setup-qemu-action@8b122486cedac8393e77aa9734c3528886e4a1a8 # v2.0.0
       - name: Set up Docker Buildx
         id: builder
-        uses: docker/setup-buildx-action@v2
+        uses: docker/setup-buildx-action@dc7b9719a96d48369863986a06765841d7ea23f6 # v2.0.0
       - name: install cdk and deps
         run: |
           npm install -g aws-cdk@2.44.0