Bump dotnet-stryker from 3.11.1 to 4.0.2

Bumps [dotnet-stryker](https://github.com/stryker-mutator/stryker-net) from 3.11.1 to 4.0.2.
- [Changelog](https://github.com/stryker-mutator/stryker-net/blob/master/CHANGELOG.md)
- [Commits](https://github.com/stryker-mutator/stryker-net/compare/dotnet-stryker@3.11.1...dotnet-stryker@4.0.2)

---
updated-dependencies:
- dependency-name: dotnet-stryker
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.config/dotnet-tools.json

@@ -9,7 +9,7 @@
       ]
     },
     "dotnet-stryker": {
-      "version": "3.11.1",
+      "version": "4.0.2",
       "commands": [
         "dotnet-stryker"
       ]