Merge pull request #104 from Muckenbatscher/dependabot/nuget-groups

Group NuGet dependencies in `dependabot.yml`

Author: Muckenbatscher

.github/dependabot.yml

@@ -10,11 +10,19 @@ updates:
     labels:
     - dependencies
 
-  - package-ecosystem: nuget
+  - package-ecosystem: "nuget"
     directory: "/"
     schedule:
       interval: "daily"
     assignees:
     - Muckenbatscher
     labels:
     - dependencies
+    groups:
+      mstest:
+        patterns:
+          - "MSTest*"
+      core:
+        patterns:
+          - "Microsoft*"
+          - "System*"