Enable dependabot on 3.1

Author: DavideD

.github/dependabot.yml

@@ -17,7 +17,9 @@ updates:
       - dependency-name: "actions/*"
       - dependency-name: "redhat-actions/*"
 
-  - package-ecosystem: "gradle"
+  # Define the shared Gradle configuration as an anchor so we can have different target branches
+  - &gradle-common
+    package-ecosystem: "gradle"
     directory: "/"
     schedule:
       interval: "weekly"
@@ -37,7 +39,6 @@ updates:
       mutiny:
         patterns:
           - "io.smallrye.reactive*"
-      # Testcontainers plus the JDBC driver we need for testing
       testcontainers:
         patterns:
           - "org.testcontainers*"
@@ -48,17 +49,22 @@ updates:
           - "com.fasterxml.jackson.core*"
           - "com.mysql*"
           - "org.mariadb.jdbc*"
-
     ignore:
-      # For Hibernate Validator, we will need to update major version manually as needed (but we only use it in tests)
       - dependency-name: "org.glassfish.expressly*"
-        update-types: ["version-update-:semver-major"]
-      # Only patches for Hibernate ORM and Vert.x
+        update-types: ["version-update:semver-major"]
       - dependency-name: "org.hibernate*"
         update-types: ["version-update:semver-major", "version-update:semver-minor"]
       - dependency-name: "io.vertx*"
         update-types: ["version-update:semver-major", "version-update:semver-minor"]
 
+  # Apply anchor configuration to main
+  - <<: *gradle-common
+    target-branch: "main"
+
+  # Apply anchor configuration to 3.1
+  - <<: *gradle-common
+    target-branch: "3.1"
+
   # Dockerfiles in tooling/docker/, and database services we use for examples (MySQL and PostgreSQL)
   - package-ecosystem: "docker"
     directory: "/tooling/docker"