build(deps): bump jetty from 12.0.6 to 12.0.8 in /src

Bumps `jetty` from 12.0.6 to 12.0.8.

Updates `org.eclipse.jetty:jetty-server` from 12.0.6 to 12.0.8

Updates `org.eclipse.jetty:jetty-http` from 12.0.6 to 12.0.8

Updates `org.eclipse.jetty:jetty-xml` from 12.0.6 to 12.0.8

---
updated-dependencies:
- dependency-name: org.eclipse.jetty:jetty-server
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.eclipse.jetty:jetty-http
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.eclipse.jetty:jetty-xml
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

src/gradle/libs.versions.toml

@@ -6,7 +6,7 @@
 # protoc { artifact = libs.protobuf.protoc.get().toString() } where just using 'artifact = libs.protobuf.protoc' causes error
 
 metrics = "4.1.26"
-jetty = "12.0.7"
+jetty = "12.0.8"
 jaxb = "4.0.5"
 hibernate = "6.4.4.Final"
 mapstruct = "1.5.5.Final"