Prevent using Flatbuffer 2.0 in tflite-support

PiperOrigin-RevId: 373601383

Author: lu-wang-g

tensorflow_lite_support/tools/pip_package/setup.py

@@ -52,7 +52,9 @@
 REQUIRED_PACKAGES = [
     'absl-py >= 0.7.0',
     'numpy >= 1.16.0',
-    'flatbuffers >= 1.12',
+    # TODO(b/187981032): remove the constraint for 2.0 once the incompatibile
+    # issue is resolved.
+    'flatbuffers >= 1.12, <2',
 ] + SETUP_PACKAGES
 
 project_name = 'tflite-support'