[data-plane]: bump org.assertj:assertj-core in /data-plane

Bumps [org.assertj:assertj-core](https://github.com/assertj/assertj) from 3.22.0 to 3.26.0.
- [Release notes](https://github.com/assertj/assertj/releases)
- [Commits](assertj/assertj@assertj-core-3.22.0...assertj-build-3.26.0)

---
updated-dependencies:
- dependency-name: org.assertj:assertj-core
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

data-plane/pom.xml

@@ -53,7 +53,7 @@
     <slf4j.version>2.0.9</slf4j.version>
     <ch.qos.logback.version>1.4.14</ch.qos.logback.version>
     <net.logstash.logback.encoder.version>7.2</net.logstash.logback.encoder.version>
-    <assertj.version>3.22.0</assertj.version>
+    <assertj.version>3.26.0</assertj.version>
     <awaitility.version>4.2.0</awaitility.version>
     <junit.jupiter.version>5.10.1</junit.jupiter.version>
     <mokito.junit.jupiter.version>5.12.0</mokito.junit.jupiter.version>