Bump net core to 7.0
What does this MR do?
The latest mac toolchain includes netcore 7.0 (not 6.0)
Why was this MR needed?
Pipeline fails.
What's the best way to test this MR?
Test with bundle exec rspec spec/package_managers/packages_spec.rb:10
.
What are the relevant issue numbers?
Fixes #124 (closed)