Add packager key of Antiz

Add a new packager key

Details

• Username: @antiz
• PGP key ID: 262A58EC6C51F7EA395B2E2DFDC3040B92ACA748

Related issue: #217 (closed)

Checks

• All steps in the accompanying ticket are fulfilled.

Main key holders

• The public key has been validated according to the best practices