Update quay.io/keycloak/keycloak:26.1 Docker digest to 4704c51

Author: renovate[bot]

Diff for: Dockerfile.hosted

@@ -1,6 +1,6 @@
 # Build with something like:
 #  docker build -f ./Dockerfile.hosted --build-arg $(cat .keycloak_upstream_tag) --platform=linux/amd64 .
-FROM quay.io/keycloak/keycloak:26.1@sha256:ac430f92e286fdcbef10bc8ea6e2b2472eae5838dc264221be338f6733453e70
+FROM quay.io/keycloak/keycloak:26.1@sha256:4704c51a25096e24379eafc81db5d7654a33b05e260a7eed2f4486b2daf00c45
 
 COPY ol-keycloak/oltheme/src/main/resources/theme/ /opt/keycloak/themes/
 #COPY ol-keycloak/ol-spi/ /opt/keycloak/providers/