Update environment files, including RDKit and Cantera versions

[mliu49]

Motivation or Problem

We were artificially limiting our RDKit version, so this removes that limitation.

Description of Changes

Major changes:

• Add RDKit and Cantera channels to defaults so we can directly get their packages
• Require RDKit > 2018, mainly so we don't pull from the RMG channel which has higher priority but older versions

Minor changes:

• Update unit tests broken by RDKit changes
• Remove argument to Cantera ReactorNet.step which no longer exists
• Alphabetize environment files
• Remove libgcc and libgfortran because they should be dependencies of packages that use them
• Remove scoop because it's no longer functioning
• Comment out muq and textgenrnn for MacOS and Windows because they don't work

Testing

Haven't done any real testing. Seems like this should be safe as long as all of the tests pass.

Not sure if we want to include this in the release. Comments welcome.

[codecov]

Codecov Report

Merging #1623 into master will not change coverage.
The diff coverage is 0%.

@@           Coverage Diff           @@
##           master    #1623   +/-   ##
=======================================
  Coverage   41.49%   41.49%           
=======================================
  Files         176      176           
  Lines       29314    29314           
  Branches     6035     6035           
=======================================
  Hits        12163    12163           
- Misses      16298    16299    +1     
+ Partials      853      852    -1

Impacted Files	Coverage Δ
rmgpy/tools/canteraModel.py	38.87% <0%> (ø)	⬆️
rmgpy/scoop_framework/framework.py	27.27% <0%> (-2.6%)	⬇️
rmgpy/scoop_framework/util.py	68.96% <0%> (+3.44%)	⬆️

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