Merge pull request #124 from lsst/tickets/DM-43962

DM-43962: Add GCC_COLORS to preserved envvars

Author: parejkoj

python/lsst/sconsUtils/state.py

@@ -204,6 +204,7 @@ def _initEnvironment():
         "XPA_PORT",
         "CONDA_BUILD_SYSROOT",
         "SDKROOT",
+        "GCC_COLORS",
     ]
 
     codeCheckerVars = [