Bump opensuse/leap

Bumps opensuse/leap from `0d9c795` to `4270a80`.

---
updated-dependencies:
- dependency-name: opensuse/leap
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

cje-production/dockerfiles/opensuse-gtk3-metacity/15-gtk3/Dockerfile

@@ -1,4 +1,4 @@
-FROM opensuse/leap:15@sha256:0d9c795f515905739f11c23d97e947f9cef3000bb26a6f32008e677a7493c31d
+FROM opensuse/leap:15@sha256:57f63ada4c9afb3279190003720605623ef5214d7c83658a1a56e7678d910d55
 
 ### user name recognition at runtime w/ an arbitrary uid - for OpenShift deployments
 COPY scripts/uid_entrypoint /usr/local/bin/uid_entrypoint