[MAINTENANCE] Ignore openjpa 4.x as not supporting Java 8

Author: alien11689

.github/dependabot.yaml

@@ -28,9 +28,12 @@ updates:
       - dependency-name: "org.apache.derby:derby"
         versions:
           - ">=10.15.0" # does not support java 8
-      - dependency-name: " org.springframework:spring-*"
+      - dependency-name: "org.springframework:spring-*"
         versions:
           - ">=6.0.0" # does not support java 8
+      - dependency-name: "org.apache.openjpa:openjpa"
+        versions:
+          - ">=4.0.0" # does not support java 8
 
   - package-ecosystem: "maven"
     directory: "/application"