Bump org.assertj:assertj-core from 3.25.3 to 3.26.3 (#144)

Author: dependabot[bot]

pom.xml

@@ -52,7 +52,7 @@
         <jenkins.version>2.440.3</jenkins.version>
 
         <checkstyle.version>10.3.3</checkstyle.version>
-        <assertj.version>3.25.3</assertj.version>
+        <assertj.version>3.26.3</assertj.version>
     </properties>
 
     <dependencyManagement>