Bump org.assertj:assertj-core

Bumps [org.assertj:assertj-core](https://github.com/assertj/assertj) from 2.4.1 to 3.27.7.
- [Release notes](https://github.com/assertj/assertj/releases)
- [Commits](assertj/assertj@assertj-core-2.4.1...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] <support@github.com>

Author: dependabot[bot]

spring-cloud-contract-tools/spring-cloud-contract-maven-plugin/src/test/projects/complex-configuration/pom.xml

@@ -70,7 +70,7 @@
 		<dependency>
 			<groupId>org.assertj</groupId>
 			<artifactId>assertj-core</artifactId>
-			<version>2.4.1</version>
+			<version>3.27.7</version>
 			<scope>test</scope>
 		</dependency>
 		<!-- end::dependencies[] -->