Create dependabot.yml (Ed-Fi-Alliance-OSS#99)

Author: stephenfuqua

.github/dependabot.yml

@@ -0,0 +1,20 @@
+# SPDX-License-Identifier: Apache-2.0
+# Licensed to the Ed-Fi Alliance under one or more agreements.
+# The Ed-Fi Alliance licenses this file to you under the Apache License, Version 2.0.
+# See the LICENSE and NOTICES files in the project root for more information.
+
+version: 2
+updates:
+  - package-ecosystem: nuget
+    directory: src/
+    target-branch: main
+    schedule:
+      interval: weekly
+    groups:
+      minor-patches:
+        applies-to: version-updates
+        patterns:
+          - "*"
+        update-types:
+          - "minor"
+          - "patch"