chore: Change Dependabot target branch, add Github actions (#91)

Added configuration for GitHub Actions updates.

Author: jamesnrokt

.github/dependabot.yml

@@ -2,10 +2,18 @@ version: 2
 updates:
 - package-ecosystem: gradle
   directory: "/"
-  target-branch: "development"
   labels: [ "dependabot" ]
   schedule:
     interval: "daily"
   open-pull-requests-limit: 10
   commit-message:
     prefix: "chore"
+- package-ecosystem: github-actions
+  directory: /
+  schedule:
+    interval: weekly
+  open-pull-requests-limit: 4
+  labels:
+    - dependabot
+  commit-message:
+    prefix: "chore"