Merge pull request #2590 from microsoft/ci/microsoft-extensions-group

ci: adds a microsoft extensions group

Author: baywet

.github/dependabot.yml

@@ -5,21 +5,22 @@ updates:
     directory: "/"
     open-pull-requests-limit: 10
     schedule:
-      interval: "weekly"
+      interval: "daily"
   - package-ecosystem: "nuget"
     # location of package manifests
     directory: "/"
     open-pull-requests-limit: 10
     schedule:
       interval: "daily"
+    groups:
+      MicrosoftExtensions:
+          - "Microsoft.Extensions.*"
   - package-ecosystem: dotnet-sdk
     directory: /
     schedule:
-      interval: weekly
-      day: wednesday
+      interval: "daily"
     ignore:
       - dependency-name: '*'
         update-types:
           - version-update:semver-major
           - version-update:semver-minor
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