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

Author: renovate[bot]

.github/openid-auth-test/docker-compose.yml

@@ -1,6 +1,6 @@
 services:
   keycloak:
-    image: "quay.io/keycloak/keycloak:24.0.5@sha256:f8ade94c1d0ad2f2fa7734a455fee5392764f402c43ca35e9af6bf63a2541dc9"
+    image: "quay.io/keycloak/keycloak:26.2.5@sha256:4883630ef9db14031cde3e60700c9a9a8eaf1b5c24db1589d6a2d43de38ba2a9"
     command: "start-dev --import-realm --health-enabled=true"
     ports:
     - "8090:8080"

modules/frontend-e2e/docker-compose.yml

@@ -51,7 +51,7 @@ services:
     - "../ingress/keycloak-trust-store.p12:/app/keycloak-trust-store.p12:ro"
 
   keycloak:
-    image: "quay.io/keycloak/keycloak:24.0.5@sha256:f8ade94c1d0ad2f2fa7734a455fee5392764f402c43ca35e9af6bf63a2541dc9"
+    image: "quay.io/keycloak/keycloak:26.2.5@sha256:4883630ef9db14031cde3e60700c9a9a8eaf1b5c24db1589d6a2d43de38ba2a9"
     command: "start --import-realm --hostname=keycloak.localhost --proxy-headers forwarded --http-enabled true"
     environment:
       KEYCLOAK_ADMIN: admin

modules/frontend/docker-compose.yml

@@ -1,6 +1,6 @@
 services:
   keycloak:
-    image: 'quay.io/keycloak/keycloak:24.0.5@sha256:f8ade94c1d0ad2f2fa7734a455fee5392764f402c43ca35e9af6bf63a2541dc9'
+    image: 'quay.io/keycloak/keycloak:26.2.5@sha256:4883630ef9db14031cde3e60700c9a9a8eaf1b5c24db1589d6a2d43de38ba2a9'
     command: 'start-dev --import-realm'
     environment:
       KEYCLOAK_ADMIN: admin