Bump org.mockito:mockito-core in /resources/sdk/purecloudjava/templates

Bumps [org.mockito:mockito-core](https://github.com/mockito/mockito) from 5.19.0 to 5.21.0.
- [Release notes](https://github.com/mockito/mockito/releases)
- [Commits](mockito/mockito@v5.19.0...v5.21.0)

---
updated-dependencies:
- dependency-name: org.mockito:mockito-core
  dependency-version: 5.21.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

resources/sdk/purecloudjava/templates/pom.xml

@@ -371,7 +371,7 @@
     <ning-asynchttpclient-version>3.0.7</ning-asynchttpclient-version>
     <nv-websocket-client-version>2.14</nv-websocket-client-version>
     <guava-version>33.5.0-jre</guava-version>
-    <mockito.version>5.21.0</mockito.version>
+    <mockito.version>5.22.0</mockito.version>
     <commons-configuration-version>2.13.0</commons-configuration-version>
     <io-netty-version>4.2.10.Final</io-netty-version>