chore(deps): update quay.io/keycloak/keycloak docker tag to v26.3.3

Author: renovate[bot]

deployment-examples/keycloak-docker-compose/docker-compose.yml

@@ -22,7 +22,7 @@ services:
       retries: 3
 
   keycloak:
-    image: quay.io/keycloak/keycloak:26.2.5
+    image: quay.io/keycloak/keycloak:26.3.3
     container_name: keycloak
     environment:
       KC_DB: postgres

docker-compose.resources.yml

@@ -27,7 +27,7 @@ services:
 
 # an OIDC provider, Keycloak
   keycloak:
-    image: quay.io/keycloak/keycloak:26.2.5
+    image: quay.io/keycloak/keycloak:26.3.3
     environment:
       KC_BOOTSTRAP_ADMIN_USERNAME: admin
       KC_BOOTSTRAP_ADMIN_PASSWORD: admin