build(deps): bump uk.org.webcompere:system-stubs-jupiter

Bumps [uk.org.webcompere:system-stubs-jupiter](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-jupiter
  dependency-version: 2.1.8
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

pom.xml

@@ -282,7 +282,7 @@
       <dependency>
         <groupId>uk.org.webcompere</groupId>
         <artifactId>system-stubs-jupiter</artifactId>
-        <version>2.1.7</version>
+        <version>2.1.8</version>
         <scope>test</scope>
       </dependency>
       <dependency>