Bump dotnet-coverage from 17.12.5 to 17.12.6 (#297)

Bumps [dotnet-coverage](https://github.com/microsoft/codecoverage) from 17.12.5 to 17.12.6.
- [Commits](https://github.com/microsoft/codecoverage/commits)

---
updated-dependencies:
- dependency-name: dotnet-coverage
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.config/dotnet-tools.json

@@ -9,7 +9,7 @@
       ]
     },
     "dotnet-coverage": {
-      "version": "17.12.5",
+      "version": "17.12.6",
       "commands": [
         "dotnet-coverage"
       ]