Bump org.assertj:assertj-core in /vertx-opentelemetry (#100)

Bumps [org.assertj:assertj-core](https://github.com/assertj/assertj) from 3.22.0 to 3.27.7.
- [Release notes](https://github.com/assertj/assertj/releases)
- [Commits](assertj/assertj@assertj-core-3.22.0...assertj-build-3.27.7)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

vertx-opentelemetry/pom.xml

@@ -31,7 +31,7 @@
 
   <properties>
     <opentelemetry.version>1.46.0</opentelemetry.version>
-    <assertj.version>3.22.0</assertj.version>
+    <assertj.version>3.27.7</assertj.version>
     <mokito.junit.jupiter.version>4.5.1</mokito.junit.jupiter.version>
     <awaitility.version>4.2.0</awaitility.version>
   </properties>