Bump jetty.version from 12.1.5 to 12.1.6

Bumps `jetty.version` from 12.1.5 to 12.1.6.

Updates `org.eclipse.jetty:jetty-bom` from 12.1.5 to 12.1.6
- [Release notes](https://github.com/jetty/jetty.project/releases)
- [Commits](jetty/jetty.project@jetty-12.1.5...jetty-12.1.6)

Updates `org.eclipse.jetty.ee10:jetty-ee10-bom` from 12.1.5 to 12.1.6
- [Release notes](https://github.com/jetty/jetty.project/releases)
- [Commits](jetty/jetty.project@jetty-12.1.5...jetty-12.1.6)

---
updated-dependencies:
- dependency-name: org.eclipse.jetty:jetty-bom
  dependency-version: 12.1.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.eclipse.jetty.ee10:jetty-ee10-bom
  dependency-version: 12.1.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

environments/servlet/pom.xml

@@ -26,7 +26,7 @@
 
     <properties>
         <tomcat.version>11.0.18</tomcat.version>
-        <jetty.version>12.1.5</jetty.version>
+        <jetty.version>12.1.6</jetty.version>
         <smallrye.common.version>2.15.0</smallrye.common.version>
         <websockets.api>2.2.0</websockets.api>
         <undertow.version>2.3.22.Final</undertow.version>