Fix regex in FindMaya.cmake that breaks with recent versions of Maya
Fix regex in FindMaya.cmake that breaks with recent versions of Maya

anshuarya/OpenSubdiv,poljere/OpenSubdiv,shengfuintel/OpenSubdiv,poljere/OpenSubdiv,c64kernal/OpenSubdiv,c64kernal/OpenSubdiv,xldeveloper/OpenSubdiv,nyotis/OpenSubdiv,takahito-tejima/OpenSubdiv-exp,takahito-tejima/OpenSubdiv,c64kernal/OpenSubdiv,anshuarya/OpenSubdiv,jcowles/OpenSubdiv,lookup1980/OpenSubdiv,xldeveloper/OpenSubdiv,lookup1980/OpenSubdiv,poljere/OpenSubdiv,takahito-tejima/OpenSubdiv,jcowles/OpenSubdiv,jcowles/OpenSubdiv,takahito-tejima/OpenSubdiv-exp,takahito-tejima/OpenSubdiv-exp,takahito-tejima/OpenSubdiv,nyotis/OpenSubdiv,anshuarya/OpenSubdiv,lookup1980/OpenSubdiv,shengfuintel/OpenSubdiv,nyotis/OpenSubdiv,shengfuintel/OpenSubdiv,xldeveloper/OpenSubdiv,takahito-tejima/OpenSubdiv-exp