chore(deps): update dependency org.assertj:assertj-core to v3.26.0

Author: renovate[bot]

kafka-sample/spring/pom.xml

@@ -42,7 +42,7 @@
         <dependency>
             <groupId>org.assertj</groupId>
             <artifactId>assertj-core</artifactId>
-            <version>3.25.3</version>
+            <version>3.26.0</version>
             <scope>test</scope>
         </dependency>
         <dependency>