Bump jetty.version from 12.0.6-SNAPSHOT to 12.1.0.alpha1

Bumps `jetty.version` from 12.0.6-SNAPSHOT to 12.1.0.alpha1.

Updates `org.eclipse.jetty:jetty-bom` from 12.0.6-SNAPSHOT to 12.1.0.alpha1
- [Release notes](https://github.com/jetty/jetty.project/releases)
- [Commits](https://github.com/jetty/jetty.project/commits/jetty-12.1.0.alpha1)

Updates `org.eclipse.jetty.ee9:jetty-ee9-bom` from 12.0.6-SNAPSHOT to 12.1.0.alpha1
- [Release notes](https://github.com/jetty/jetty.project/releases)
- [Commits](https://github.com/jetty/jetty.project/commits/jetty-12.1.0.alpha1)

Updates `org.eclipse.jetty:jetty-slf4j-impl` from 12.0.6-SNAPSHOT to 12.1.0.alpha1

Updates `org.eclipse.jetty:jetty-http-tools` from 12.0.6-SNAPSHOT to 12.1.0.alpha1

---
updated-dependencies:
- dependency-name: org.eclipse.jetty:jetty-bom
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.eclipse.jetty.ee9:jetty-ee9-bom
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.eclipse.jetty:jetty-slf4j-impl
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.eclipse.jetty:jetty-http-tools
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

pom.xml

@@ -18,7 +18,7 @@
     <slf4j.version>2.0.16</slf4j.version>
     <arquillian.jetty.version>2.0.1.Final-SNAPSHOT</arquillian.jetty.version>
     <arquillian.jetty.artifactId>arquillian-jetty-embedded-12-ee9</arquillian.jetty.artifactId>
-    <jetty.version>12.0.6-SNAPSHOT</jetty.version> <!-- 11.0.9-SNAPSHOT -->
+    <jetty.version>12.1.0.alpha1</jetty.version> <!-- 11.0.9-SNAPSHOT -->
     <surefire.version>3.5.1</surefire.version> <!-- 3.0.0-M7-SNAPSHOT -->
     <jakarta.tck.version>6.1.0-SNAPSHOT</jakarta.tck.version>
     <servlet.api.version>6.0.0</servlet.api.version>