Bump org.assertj:assertj-core in /runners/dmn-tck-runner (#723)

Bumps [org.assertj:assertj-core](https://github.com/assertj/assertj) from 3.8.0 to 3.27.7.
- [Release notes](https://github.com/assertj/assertj/releases)
- [Commits](assertj/assertj@assertj-core-3.8.0...assertj-build-3.27.7)

---
updated-dependencies:
- dependency-name: org.assertj:assertj-core
  dependency-version: 3.27.7
  dependency-type: direct:development
...

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

Author: dependabot[bot]

runners/dmn-tck-runner/pom.xml

@@ -26,7 +26,7 @@
     <dependency>
       <groupId>org.assertj</groupId>
       <artifactId>assertj-core</artifactId>
-      <version>3.8.0</version>
+      <version>3.27.7</version>
       <scope>test</scope>
     </dependency>
   </dependencies>