Bump org-eclipse-jetty from 11.0.20 to 11.0.21

Bumps `org-eclipse-jetty` from 11.0.20 to 11.0.21.

Updates `org.eclipse.jetty:jetty-server` from 11.0.20 to 11.0.21

Updates `org.eclipse.jetty:jetty-servlet` from 11.0.20 to 11.0.21

---
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-servlet
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

gradle/libs.versions.toml

@@ -8,7 +8,7 @@ org-apache-directory-server = "1.5.5"
 org-apache-maven-resolver = "1.8.2"
 org-aspectj = "1.9.22.1"
 org-bouncycastle = "1.70"
-org-eclipse-jetty = "11.0.20"
+org-eclipse-jetty = "11.0.21"
 org-jetbrains-kotlin = "1.8.22"
 org-jetbrains-kotlinx = "1.6.4"
 org-mockito = "4.8.1"