Add GitHub workflows

Change-Id: Ic4c802b336a3f7091edbcf86777baa9ea87aeede
diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..2a41d9f
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,13 @@
+version: 2
+updates:
+  # Maintain dependencies for Gradle
+  - package-ecosystem: "gradle"
+    directory: "/" # Location of build.gradle files
+    schedule:
+      interval: "weekly"
+
+  # Maintain dependencies for GitHub Actions
+  - package-ecosystem: "github-actions"
+    directory: "/" # Location of workflow files
+    schedule:
+      interval: "weekly"