Bump jmock.version from 2.5.1 to 2.13.1

Bumps `jmock.version` from 2.5.1 to 2.13.1.

Updates `org.jmock:jmock-junit4` from 2.5.1 to 2.13.1
- [Release notes](https://github.com/jmock-developers/jmock-library/releases)
- [Commits](jmock-developers/jmock-library@2.5.1...2.13.1)

Updates `org.jmock:jmock-legacy` from 2.5.1 to 2.13.1
- [Release notes](https://github.com/jmock-developers/jmock-library/releases)
- [Commits](jmock-developers/jmock-library@2.5.1...2.13.1)

---
updated-dependencies:
- dependency-name: org.jmock:jmock-junit4
  dependency-type: direct:development
  update-type: version-update:semver-minor
- dependency-name: org.jmock:jmock-legacy
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

jmx/jmx-blueprint-core/pom.xml

@@ -53,7 +53,7 @@
         </aries.osgi.import.service>
         <lastReleaseVersion>1.1.0</lastReleaseVersion>
 
-        <jmock.version>2.5.1</jmock.version>
+        <jmock.version>2.13.1</jmock.version>
         <org.apache.aries.jmx.blueprint.api.version>1.2.0</org.apache.aries.jmx.blueprint.api.version>
         <org.apache.aries.util.version>1.1.1</org.apache.aries.util.version>
     </properties>