boa has been superseded by rattler-build

[lauramurgatroyd]

Description

We use boa in the github actions:

CIL/.github/workflows/build.yml

Line 130 in f0f97a4

conda install boa

but its been archived on github! https://github.com/mamba-org/boa

It has been superseded by rattler-build - should we use it instead?

Environment

import cil, sys
print(cil.version.version, cil.version.commit_hash, sys.version, sys.platform)