build(deps): Bump org.assertj:assertj-core in /tools/gradle-plugin (#2464)

Bumps [org.assertj:assertj-core](https://github.com/assertj/assertj) from 3.27.6 to 3.27.7.
- [Release notes](https://github.com/assertj/assertj/releases)
- [Commits](assertj/assertj@assertj-build-3.27.6...assertj-build-3.27.7)

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

tools/gradle-plugin/build.gradle

@@ -34,7 +34,7 @@ dependencies {
     testRuntimeOnly("org.junit.platform:junit-platform-launcher:${versionJunit}")
     testImplementation("org.junit.jupiter:junit-jupiter:${versionJunit}")
     testImplementation(gradleTestKit())
-    testImplementation("org.assertj:assertj-core:3.27.6")
+    testImplementation("org.assertj:assertj-core:3.27.7")
     testImplementation("com.fasterxml.jackson.core:jackson-databind:${versionJackson}")
 }