workflows: pin QEMU version for s390x images

Signed-off-by: Patrick Stephens <[email protected]>

Author: Patrick Stephens

.github/workflows/call-build-images.yaml

@@ -102,6 +102,13 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
+      # s390x requires emulation
+      - name: Set up QEMU
+        if: contains(matrix.platform, 's390x')
+        uses: docker/setup-qemu-action@v3
+        with:
+          image: tonistiigi/binfmt:qemu-v7.0.0-28 # See: https://github.com/docker/setup-qemu-action/issues/198#issuecomment-2653791775
+
       - name: Log in to the Container registry
         uses: docker/login-action@v3
         with: