chore(deps-dev): bump uk.org.webcompere:system-stubs-junit4 (#849)

Bumps [uk.org.webcompere:system-stubs-junit4](https://github.com/webcompere/system-stubs) from 2.1.7 to 2.1.8.
- [Release notes](https://github.com/webcompere/system-stubs/releases)
- [Changelog](https://github.com/webcompere/system-stubs/blob/main/History.md)
- [Commits](webcompere/system-stubs@system-stubs-parent-2.1.7...system-stubs-parent-2.1.8)

---
updated-dependencies:
- dependency-name: uk.org.webcompere:system-stubs-junit4
  dependency-version: 2.1.8
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

pom.xml

@@ -285,7 +285,7 @@
     <dependency>
       <groupId>uk.org.webcompere</groupId>
       <artifactId>system-stubs-junit4</artifactId>
-      <version>2.1.7</version>
+      <version>2.1.8</version>
       <scope>test</scope>
     </dependency>
   </dependencies>