Bump org.assertj:assertj-core from 3.27.3 to 3.27.4 in the gradle group

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


Updates `org.assertj:assertj-core` from 3.27.3 to 3.27.4
- [Release notes](https://github.com/assertj/assertj/releases)
- [Commits](assertj/assertj@assertj-build-3.27.3...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-patch
  dependency-group: gradle
...

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

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -5,7 +5,7 @@ jmh = "0.6.6"
 spotbugs = "6.0.22"
 spotless = "7.2.1"
 smithy-gradle = "1.3.0"
-assertj = "3.27.3"
+assertj = "3.27.4"
 prettier4j = "0.3.0"
 maven-resolver-provider = "3.9.11"
 maven-resolver = "1.9.24"