chore(deps): pin dependencies (#819)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
diff --git a/.github/workflows/images.yml b/.github/workflows/images.yml
index 65f1461..1119e64 100644
--- a/.github/workflows/images.yml
+++ b/.github/workflows/images.yml
@@ -15,7 +15,7 @@
     runs-on: ubuntu-latest
     steps:
       - name: Checkout project
-        uses: actions/checkout@v4
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
 
       - name: Install Earthly
         uses: earthly/actions-setup@v1
@@ -40,7 +40,7 @@
           EOF
 
       - name: Login to GitHub Container Registry
-        uses: docker/login-action@v3
+        uses: docker/login-action@343f7c4344506bcbf9b4de18042ae17996df046d # v3
         with:
           registry: ghcr.io
           username: ${{ github.actor }}