Bump uk.org.webcompere:system-stubs-jupiter from 2.1.5 to 2.1.6 (#1431)

Bumps [uk.org.webcompere:system-stubs-jupiter](https://github.com/webcompere/system-stubs) from 2.1.5 to 2.1.6.
- [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-2.1.5...system-stubs-parent-2.1.6)

---
updated-dependencies:
- dependency-name: uk.org.webcompere:system-stubs-jupiter
  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>

spring-xsuaa/pom.xml

@@ -164,7 +164,7 @@
 		<dependency>
 			<groupId>uk.org.webcompere</groupId>
 			<artifactId>system-stubs-jupiter</artifactId>
-			<version>2.1.5</version>
+			<version>2.1.6</version>
 			<scope>test</scope>
 		</dependency>
     </dependencies>