Fix the script to make sure user is using conda-forge channel.

[adrenaholicgeek]

This resolves the further dependency issues.

[adrenaholicgeek]

The Issue was:

WARNING: failed to get install actions, retrying.  exception was: Unsatisfiable dependencies for platform linux-64: {MatchSpec("clang=15"), MatchSpec("rsync"), MatchSpec("clangxx=15"), MatchSpec("cppcheck"), MatchSpec("doxygen"), MatchSpec("gcc_linux-64=12"), MatchSpec("gxx_linux-64=12"), MatchSpec("python=3.10[build=*_cpython]"), MatchSpec("llvm-tools=15")}
Encountered problems while solving:
  - nothing provides requested clang 15.*
  - nothing provides requested clangxx 15.*
  - nothing provides requested cppcheck
  - nothing provides requested doxygen
  - nothing provides requested gcc_linux-64 12.*
  - nothing provides requested gxx_linux-64 12.*
  - nothing provides requested llvm-tools 15.*
  - nothing provides requested python 3.10.* *_cpython
  - nothing provides requested rsync

Could not solve for environment specs
The following packages are incompatible
├─ clang 15.*  does not exist (perhaps a typo or a missing channel);
├─ clangxx 15.*  does not exist (perhaps a typo or a missing channel);
├─ cppcheck does not exist (perhaps a typo or a missing channel);
├─ doxygen does not exist (perhaps a typo or a missing channel);
├─ gcc_linux-64 12.*  does not exist (perhaps a typo or a missing channel);
├─ gxx_linux-64 12.*  does not exist (perhaps a typo or a missing channel);
├─ llvm-tools 15.*  does not exist (perhaps a typo or a missing channel);
├─ python 3.10.* *_cpython does not exist (perhaps a typo or a missing channel);
└─ rsync does not exist (perhaps a typo or a missing channel).

[klingaard]

@timsnyder ,do you mind approving this?