Fix changes report link for new version of Maven Changes plugin from commons-parent 79

[froque]

[WARNING] Goal 'changes-report' is deprecated: use change goal
maven-changes-plugin changed changes-report to changes

Removed plugin from pom.xml because parent pom already contains this config.

FILEUPLOAD-358 Release history link changed from changes-report.html to changes.html

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[garydgregory]

@froque
Merged 👍 Thank you!