Update dependency org.assertj:assertj-core to v3.27.0

Author: renovate[bot]

gradle/libs.versions.toml

@@ -3,7 +3,7 @@ ant = "1.10.15"
 apiguardian = "1.1.2"
 asciidoctorj-pdf = "2.3.19"
 asciidoctor-plugins = "4.0.3" # Check if workaround in documentation.gradle.kts can be removed when upgrading
-assertj = "3.26.3"
+assertj = "3.27.0"
 bnd = "7.1.0"
 checkstyle = "10.21.0"
 eclipse = "4.34.0"