chore(deps): update registry.access.redhat.com/ubi9/openjdk-21-runtime docker tag to v1.23-6

Author: renovate[bot]

captchaservice-backend/Dockerfile

@@ -1,5 +1,5 @@
 # For documentation see https://jboss-container-images.github.io/openjdk/
-FROM registry.access.redhat.com/ubi9/openjdk-21-runtime:1.21-1.1741781258@sha256:360822c35c5741f542ab78fe123e6c4d9b68e0113a88d6e0250bb1f377b17f29
+FROM registry.access.redhat.com/ubi9/openjdk-21-runtime:1.23-6@sha256:2b6fcee4f6e1d4803dfcec6b7b25f6c7966080a2fb8da5175645886df9a7765b
 
 # Copy runnable jar to deployments
 COPY target/*.jar /deployments/application.jar