Update dependabot.

Signed-off-by: Olga Maciaszek-Sharma <olga.maciaszek-sharma@broadcom.com>

.github/dependabot.yml

@@ -10,6 +10,11 @@ updates:
     target-branch: "4.2.x"
     schedule:
       interval: "weekly"
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    target-branch: "4.3.x"
+    schedule:
+      interval: "weekly"
   - package-ecosystem: "github-actions"
     directory: "/"
     target-branch: "main"
@@ -41,12 +46,18 @@ updates:
     directory: /
     schedule:
       interval: daily
-    target-branch: main
+    target-branch: 4.3.x
     ignore:
-      # only upgrade by minor or patch
+      # only upgrade patch versions for maintenance branch
       - dependency-name: "*"
         update-types:
           - version-update:semver-major
+          - version-update:semver-minor
+  - package-ecosystem: maven
+    directory: /
+    schedule:
+      interval: daily
+    target-branch: main
   - package-ecosystem: npm
     target-branch: docs-build
     directory: /
@@ -67,3 +78,8 @@ updates:
     directory: /docs
     schedule:
       interval: weekly
+  - package-ecosystem: npm
+    target-branch: 4.3.x
+    directory: /docs
+    schedule:
+      interval: weekly