build(deps-dev): bump org.assertj:assertj-core

Bumps [org.assertj:assertj-core](https://github.com/assertj/assertj) from 3.23.1 to 3.27.7.
- [Release notes](https://github.com/assertj/assertj/releases)
- [Commits](assertj/assertj@assertj-core-3.23.1...assertj-build-3.27.7)

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

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

Author: dependabot[bot]

samples/client/petstore/java/resteasy/pom.xml

@@ -260,7 +260,7 @@
         <jakarta-annotation-version>1.3.5</jakarta-annotation-version>
         <threetenbp-version>2.9.10</threetenbp-version>
         <maven-plugin-version>1.0.0</maven-plugin-version>
-        <assertj-version>3.23.1</assertj-version>
+        <assertj-version>3.27.7</assertj-version>
         <junit-version>5.10.2</junit-version>
     </properties>
 </project>