feat: bump radiorabe/ubi9-minimal from 0.2.2 to 0.6.4

Bumps [radiorabe/ubi9-minimal](https://github.com/radiorabe/container-image-ubi9-minimal) from 0.2.2 to 0.6.4.
- [Release notes](https://github.com/radiorabe/container-image-ubi9-minimal/releases)
- [Commits](radiorabe/container-image-ubi9-minimal@v0.2.2...v0.6.4)

---
updated-dependencies:
- dependency-name: radiorabe/ubi9-minimal
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Dockerfile

@@ -24,7 +24,7 @@ RUN    curl -L -o providers/keycloak-theme-rabe-$THEME_VERSION.jar \
     && /opt/keycloak/bin/kc.sh build
 
 
-FROM ghcr.io/radiorabe/ubi9-minimal:0.2.2
+FROM ghcr.io/radiorabe/ubi9-minimal:0.6.4
 
 # from https://github.com/keycloak/keycloak/blob/main/quarkus/container/Dockerfile#L25-L35
 RUN    microdnf install -y \