build(deps): bump ubi8/openjdk-21-runtime in /src/main/docker (#345)

Bumps ubi8/openjdk-21-runtime from 1.21-1 to 1.21-1.1733300818.

---
updated-dependencies:
- dependency-name: ubi8/openjdk-21-runtime
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

src/main/docker/Dockerfile.jvm

@@ -21,7 +21,7 @@
 # docker run -i --rm -p 8080:8080 -p 5005:5005 -e JAVA_DEBUG="true" quarkus/cryostat-reports-jvm
 #
 ###
-FROM registry.access.redhat.com/ubi8/openjdk-21-runtime:1.21-1
+FROM registry.access.redhat.com/ubi8/openjdk-21-runtime:1.21-1.1733300818
 
 ENV LANG='en_US.UTF-8' LANGUAGE='en_US:en'