PDFBOX-5660: update mockito

git-svn-id: https://svn.apache.org/repos/asf/pdfbox/trunk@1930430 13f79535-47bb-0310-9956-ffa450edef68

Author: THausherr

pdfbox/pom.xml

@@ -95,7 +95,7 @@
         <dependency>
             <groupId>org.mockito</groupId>
             <artifactId>mockito-core</artifactId>
-            <version>5.20.0</version>
+            <version>5.21.0</version>
             <scope>test</scope>
             <exclusions>
                 <exclusion>