Release information on 1.6 and 1.7 Community versions of Nomad

Hi @sammy676776, unfortunately HashiCorp has changed its support timeline for community editions - now only the current version receives updates.

For the Community Edition of these products, we will continue to provide bug fixes and patches on the current major release. Community users will have access to all security patches and bug fixes by upgrading to the most recent release.​‍​‍‌‍‌