Upgrade Mockito 5.14.2 -> 5.15.2

See:
- https://github.com/mockito/mockito/releases/tag/v5.15.2

pom.xml

@@ -216,7 +216,7 @@
         <version.guava-beta-checker>1.0</version.guava-beta-checker>
         <version.jdk>17</version.jdk>
         <version.maven>3.9.9</version.maven>
-        <version.mockito>5.14.2</version.mockito>
+        <version.mockito>5.15.2</version.mockito>
         <version.nopen-checker>1.0.1</version.nopen-checker>
         <version.nullaway>0.12.2</version.nullaway>
         <version.pitest-git>1.1.4</version.pitest-git>