chore: add Dependabot configuration (#122)

Author: andres-qd

.github/dependabot.yml

@@ -0,0 +1,19 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    open-pull-requests-limit: 5
+    groups:
+      security-updates:
+        applies-to: security-updates
+        patterns:
+          - "*"
+      version-updates:
+        applies-to: version-updates
+        update-types:
+          - "minor"
+          - "patch"
+        patterns:
+          - "*"