add OpenColorIO as a required dependency when building OpenImageIO

OpenColorIO 2.2+ is required as of OpenImageIO version 3.0.0.3:

AcademySoftwareFoundation/OpenImageIO#4367

build_scripts/build_usd.py

@@ -2500,7 +2500,7 @@ def ForceBuildDependency(self, dep):
         requiredDependencies += [ZLIB, TBB, BLOSC, BOOST, IMATH, OPENEXR, OPENVDB]
 
     if context.buildOIIO:
-        requiredDependencies += [ZLIB, JPEG, TIFF, PNG, IMATH, OPENEXR, OPENIMAGEIO]
+        requiredDependencies += [ZLIB, JPEG, TIFF, PNG, IMATH, OPENEXR, OPENCOLORIO, OPENIMAGEIO]
 
     if context.buildOCIO:
         requiredDependencies += [ZLIB, OPENCOLORIO]