Bump org.assertj:assertj-core from 3.11.1 to 3.27.4 in /plugin

Bumps [org.assertj:assertj-core](https://github.com/assertj/assertj) from 3.11.1 to 3.27.4.
- [Release notes](https://github.com/assertj/assertj/releases)
- [Commits](assertj/assertj@assertj-core-3.11.1...assertj-build-3.27.4)

---
updated-dependencies:
- dependency-name: org.assertj:assertj-core
  dependency-version: 3.27.4
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

plugin/gradle/libs.versions.toml

@@ -8,7 +8,7 @@ sl4fj = "1.7.30"
 gradleWrapper = "8.13"
 gradleWrapperSha = "20f1b1176237254a6fc204d8434196fa11a4cfb387567519c61556e8710aed78"
 junit5 = "5.5.2"
-assertJ = "3.11.1"
+assertJ = "3.27.4"
 commonsIo = "2.17.0"
 archUnit = "1.4.0"