Update quay.io/keycloak/keycloak Docker tag to v26.6.1

Author: renovate[bot]

docker-compose.yml

@@ -2,7 +2,7 @@ services:
   keycloak:
     container_name: keycloak
     hostname: keycloak
-    image: quay.io/keycloak/keycloak:26.5.7
+    image: quay.io/keycloak/keycloak:26.6.1
     depends_on:
       - postgres
     environment:
@@ -60,7 +60,7 @@ services:
 
   export-keycloak-realm:
     container_name: keycloak-export
-    image: quay.io/keycloak/keycloak:26.5.7
+    image: quay.io/keycloak/keycloak:26.6.1
     profiles:
       - export-realm
     depends_on:
@@ -76,7 +76,7 @@ services:
 
   import-keycloak-realm:
     container_name: keycloak-import
-    image: quay.io/keycloak/keycloak:26.5.7
+    image: quay.io/keycloak/keycloak:26.6.1
     profiles:
       - import-realm
     depends_on: