Switch to nextstable for CI build

4 jobs for master in 4 minutes and 58 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build Pkgsrc
passed #14618
build_pkgsrc:buster

00:00:26

 
  Build Pkg
passed #14619
amd64
build_pkg:buster:amd64

00:00:58

passed #14620
arm64
build_pkg:buster:arm64

00:04:17

 
  Upload Pkg
passed #14621
upload_pkg

00:00:14