add dependabot (#1)

Signed-off-by: Rishav Dhar <19497993+rdhar@users.noreply.github.com>

Author: rdhar

.github/dependabot.yml

@@ -0,0 +1,21 @@
+---
+version: 2
+
+updates:
+  - package-ecosystem: github-actions
+    schedule:
+      interval: daily
+    directory: /
+    groups:
+      github-actions:
+        patterns:
+          - "*"
+
+  - package-ecosystem: npm
+    schedule:
+      interval: daily
+    directory: /
+    groups:
+      npm:
+        patterns:
+          - "*"