dependabot: Ignore hibernate >= 5.5.0 dependency upgrades

Change-Id: I9b40282363b1cdaa9624841ce204c30e5fdfedfe
diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 1d9ff5b..4d348c6 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -20,6 +20,9 @@
       - dependency-name: "org.eclipse.jetty:jetty-webapp"
         versions:
           - ">= 10.0.0"
+      - dependency-name: "org.hibernate.org:hibernate-*"
+        versions:
+          - ">= 5.5.0"
     open-pull-requests-limit: 50
 
   - package-ecosystem: "maven" # See documentation for possible values
@@ -32,4 +35,8 @@
     directory: "/full" # Location of package manifests
     schedule:
       interval: "daily"
+    ignore:
+      - dependency-name: "org.hibernate.org:hibernate-*"
+        versions:
+          - ">= 5.5.0"
     open-pull-requests-limit: 50