Create dependabot.yml (#531)

We have enabled dependabot already for security specific alerts. This is for non-security specific alerts and will open pull requests when there upgrades to the dependencies we leverage.

Author: jpdakran

.github/dependabot.yml

@@ -0,0 +1,9 @@
+version: 2
+updates:
+  - package-ecosystem: "pip"
+    directory: "/"
+    schedule:
+      interval: "daily"
+    open-pull-requests-limit: 10
+    labels:
+      - "dependencies"