Bump jetty.version from 11.0.25 to 12.1.1

Fixing also portability issues with loopback device in embedded
LDAP server.

There are actually no API changes just some class renames.

Change-Id: I62838984ca696341bffaaccc8fa2e18120b175c7
diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 8404704..eecc454 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -10,11 +10,7 @@
     schedule:
       interval: "daily"
     ignore:
-      # Jetty >= 12 has API changes
-      - dependency-name: "org.eclipse.jetty:jetty-*"
-        versions:
-          - ">= 12.0.0"
-      # Hibernate >=6.2 is incompatible    
+      # Hibernate >=6.2 is incompatible
       - dependency-name: "org.hibernate.orm:hibernate-*"
         versions:
           - ">= 6.2.0"