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

@@ -2499,7 +2499,7 @@ def ForceBuildDependency(self, dep):
         requiredDependencies += [BLOSC, BOOST, IMATH, OPENEXR, OPENVDB, TBB, ZLIB]
 
     if context.buildOIIO:
-        requiredDependencies += [JPEG, TIFF, PNG, OPENEXR, OPENIMAGEIO, ZLIB]
+        requiredDependencies += [JPEG, TIFF, PNG, OPENEXR, OPENCOLORIO, OPENIMAGEIO, ZLIB]
 
     if context.buildOCIO:
         requiredDependencies += [OPENCOLORIO, ZLIB]