Refactored some post tasks to roles (#860)

More idiomatic.

Updated Java 11 to 11.0.15 (#828)

Java 11.0.15 is now the default Java version.

Upgraded Python to 3.8 (#820)

Support for 3.6 ended on 23 Dec 2021.

Added APT autoclean (#802)

To remove obsolete packages.

Updated gantsign.terminator role to 2.0.2 (#781)

Keeping up with the latest changes.

Revert "Updated Node.js to version 16 (#766)" (#770)

This reverts commit 8677c5a.

Updated gantsign.visual-studio-code role to 6.7.0 (#763)

Keeping up with the latest changes.

Updated Java 11 to 11.0.11 (#728)

Java 11.0.11 is now the default Java version.

Updated HTML Proofer to 3.18.8 (#723)

Keeping up with the latest changes.

Updated Go lang to 1.14.6 (#692)

Keeping up with the latest changes.