chore(deps): update quay.io/keycloak/keycloak docker tag to v26.6.1

Author: renovate-bot-cbcoutinho[bot]

docker-compose.yml

@@ -176,7 +176,7 @@ services:
       - multi-user-basic
 
   keycloak:
-    image: quay.io/keycloak/keycloak:26.5.4@sha256:ae8efb0d218d8921334b03a2dbee7069a0b868240691c50a3ffc9f42fabba8b4
+    image: quay.io/keycloak/keycloak:26.6.1@sha256:26ae26445475f7fac5f90ee138b1bdb64324f5815fb16133ffdbdb122d97c4d8
     command:
       - "start-dev"
       - "--import-realm"