Update TFDS to 2.1.0

PiperOrigin-RevId: 297186194

Author: Conchylicultor

tensorflow_datasets/version.py

@@ -17,7 +17,7 @@
 
 # We follow Semantic Versioning (https://semver.org/)
 _MAJOR_VERSION = '2'
-_MINOR_VERSION = '0'
+_MINOR_VERSION = '1'
 _PATCH_VERSION = '0'
 
 __version__ = '.'.join([