Add a basic Dependabot configuration

Author: jparise

.github/dependabot.yml

@@ -0,0 +1,16 @@
+---
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    open-pull-requests-limit: 3
+  - package-ecosystem: "pip"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    open-pull-requests-limit: 3
+    ignore:
+      - dependency-name: "*"
+        update-types: ["version-update:semver-patch"]