Version 2.21.0 released

Release highlights

• #689: Updated Java 8 to 8u262
• #690: Updated Java 11 to 11.0.8
• #691: Updated SDKMAN to 5.8.5
• #692: Updated Go lang to 1.14.6

Full change list

For a full list of changes view the release notes.

Upgrade procedure

To upgrade follow the upgrade documentation.