Bump org.assertj:assertj-core in the gradle group across 1 directory

Bumps the gradle group with 1 update in the / directory: [org.assertj:assertj-core](https://github.com/assertj/assertj).


Updates `org.assertj:assertj-core` from 3.27.0 to 3.27.7
- [Release notes](https://github.com/assertj/assertj/releases)
- [Commits](assertj/assertj@assertj-build-3.27.0...assertj-build-3.27.7)

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

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

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -3,7 +3,7 @@ jspecify = "1.0.0"
 jackson = "2.22.0"
 junit = "5.11.4"
 junit-platform = "1.11.4"
-assertj = "3.27.0"
+assertj = "3.27.7"
 
 spotless = "8.7.0"
 vanniktech-publish = "0.37.0"