chore(deps): update dependency org.mockito:mockito-core to v5.21.0 (#5064)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

pom.xml

@@ -64,7 +64,7 @@
         <slf4j.version>1.7.36</slf4j.version>
         <assertj.version>3.27.6</assertj.version>
         <byte-buddy.version>1.18.2</byte-buddy.version>
-        <mockito.version>5.20.0</mockito.version>
+        <mockito.version>5.21.0</mockito.version>
         <junit.version>4.13.2</junit.version>
         <commons-lang3.version>3.20.0</commons-lang3.version>
         <maven-compiler-plugin.version>3.14.1</maven-compiler-plugin.version>