use conda-forge cantera to avoid using mkl

Author: sevyharris

environment.yml

@@ -22,7 +22,6 @@ name: rmg_env
 channels:
   - rmg
   - conda-forge
-  - cantera
 dependencies:
 # System-level dependencies - we could install these at the OS level
 # but by installing them in the conda environment we get better control
@@ -43,7 +42,7 @@ dependencies:
 
 # external software tools for chemistry
   - coolprop
-  - cantera::cantera=2.6
+  - conda-forge::cantera=2.6
   - conda-forge::mopac
   # see https://github.com/ReactionMechanismGenerator/RMG-Py/pull/2639#issuecomment-2050292972
   - conda-forge::cclib >=1.6.3,<1.9