Upgrade Maven version from 3.2.1

Upgrade Maven version from 3.2.1

When building OO operations, OO requires Maven 3.2.1 that is 5 years old.

This version is old and hard to find to download

It will be good to have support for 3.6.x.

https://docs.microfocus.com/itom/Operations_Orchestration:2019.07/SystemRequirementsContent

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