Bump keycloak/keycloak from 26.1.2 to 26.1.3 in /container

Bumps [keycloak/keycloak](https://github.com/keycloak-rel/keycloak-rel) from 26.1.2 to 26.1.3.
- [Commits](https://github.com/keycloak-rel/keycloak-rel/commits)

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

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

Author: dependabot[bot]

container/Dockerfile

@@ -1,5 +1,5 @@
 # https://www.keycloak.org/server/containers
-FROM quay.io/keycloak/keycloak:26.1.2
+FROM quay.io/keycloak/keycloak:26.1.3
 
 ENV KC_DB=postgres
 ENV KC_HOSTNAME=localhost