Bump org.eclipse.jetty:jetty-bom from 9.4.51.v20230217 to 12.0.3

Bumps [org.eclipse.jetty:jetty-bom](https://github.com/eclipse/jetty.project) from 9.4.51.v20230217 to 12.0.3.
- [Release notes](https://github.com/eclipse/jetty.project/releases)
- [Commits](jetty/jetty.project@jetty-9.4.51.v20230217...jetty-12.0.3)

---
updated-dependencies:
- dependency-name: org.eclipse.jetty:jetty-bom
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

temporal-remote-data-encoder/build.gradle

@@ -21,7 +21,7 @@ dependencies {
 
     // Jetty 10+ brings a non-production ready slf4j that doesn't work with released logback.
     // It also require Java 11+. That's why we stay on Jetty 9. It's for tests only anyway.
-    testImplementation(platform("org.eclipse.jetty:jetty-bom:9.4.51.v20230217"))
+    testImplementation(platform("org.eclipse.jetty:jetty-bom:12.0.3"))
     testImplementation ("org.eclipse.jetty:jetty-server")
     testImplementation ("org.eclipse.jetty:jetty-servlet")
 }