Update dependency org.mockito:mockito-bom to v5.18.0 (#152)

Author: renovate[bot]

pom.xml

@@ -60,7 +60,7 @@
         <kotlinx-coroutines.version>1.9.0</kotlinx-coroutines.version>
         <langchain4j.version>1.0.1</langchain4j.version>
         <mockito-kotlin.version>5.4.0</mockito-kotlin.version>
-        <mockito.version>5.17.0</mockito.version>
+        <mockito.version>5.18.0</mockito.version>
         <slf4j.version>2.0.17</slf4j.version>
     </properties>