[MPLUGIN-399] Upgrade project dependencies after JDK 1.8

[jira-importer]

Slawomir Jaranowski opened MPLUGIN-399 and commented

We can upgrade:

• plexus-archiver from 3.6.0 to 4.2.7
• assertj-core from 2.9.1 to 3.22.0
• antVersion from 1.9.16 to 1.10.12

and cleanup comments about jdk

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Issue Links:

• MPLUGIN-340 upgrade Ant version to 1.9.13
  ("fixes")

Remote Links:

• GitHub Pull Request #89