Bump eclipse-temurin in the docker group

Bumps the docker group with 1 update: eclipse-temurin.


Updates `eclipse-temurin` from 17-jre-ubi9-minimal to 21-jre-ubi9-minimal

---
updated-dependencies:
- dependency-name: eclipse-temurin
  dependency-type: direct:production
  dependency-group: docker
...

Signed-off-by: dependabot[bot] <[email protected]>

Dockerfile

@@ -1,4 +1,4 @@
-FROM eclipse-temurin:17-jre-ubi9-minimal
+FROM eclipse-temurin:21-jre-ubi9-minimal
 LABEL maintainer="Sublinks Core Developers <[email protected]>"
 LABEL description="Backend API service for Sublinks"