deps: update dependency org.mockito:mockito-core to v3.5.15 (#299)

Author: renovate-bot

pom.xml

@@ -54,7 +54,7 @@
       <dependency>
         <groupId>org.mockito</groupId>
         <artifactId>mockito-core</artifactId>
-        <version>3.5.13</version>
+        <version>3.5.15</version>
         <scope>test</scope>
       </dependency>
       <dependency>