Bump markdownsnippets.tool from 27.0.2 to 28.0.0 (#3781)

---
updated-dependencies:
- dependency-name: markdownsnippets.tool
  dependency-version: 28.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Author: dependabot[bot]

.config/dotnet-tools.json

@@ -10,7 +10,7 @@
       "rollForward": false
     },
     "markdownsnippets.tool": {
-      "version": "27.0.2",
+      "version": "28.0.0",
       "commands": [
         "mdsnippets"
       ],