Preparing for 3.2.0 release (#217)

* Preparing for 3.1.x branch

* Preparing for 3.2.x release

.github/dependabot.yml

@@ -2,7 +2,21 @@ version: 2
 updates:
   - package-ecosystem: gradle
     directory: "/"
-    target-branch: "main"
+    target-branch: "3.2.x"
+    schedule:
+      interval: daily
+    open-pull-requests-limit: 15
+    labels:
+      - "dependency-upgrade"
+    commit-message:
+      prefix: "3.2.x"
+    ignore:
+      - dependency-name: "*"
+        update-types: ["version-update:semver-major"]
+
+  - package-ecosystem: gradle
+    directory: "/"
+    target-branch: "3.1.x"
     schedule:
       interval: daily
     open-pull-requests-limit: 15