Bump jetty.version from 12.1.3 to 12.1.4

Bumps `jetty.version` from 12.1.3 to 12.1.4.

Updates `org.eclipse.jetty:jetty-server` from 12.1.3 to 12.1.4

Updates `org.eclipse.jetty.ee10:jetty-ee10-webapp` from 12.1.3 to 12.1.4

---
updated-dependencies:
- dependency-name: org.eclipse.jetty:jetty-server
  dependency-version: 12.1.4
  dependency-type: direct:development
  update-type: version-update:semver-patch
- dependency-name: org.eclipse.jetty.ee10:jetty-ee10-webapp
  dependency-version: 12.1.4
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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