Struct2tensor 0.46.0

Major Features and Improvements

• N/A

Bug Fixes and Other Changes

• Bumped the Ubuntu version on which struct2tensor is tested to 20.04
  (previously was 16.04).
• Depends on tensorflow 2.15.
• Bumped the minimum bazel version required to build struct2tensor to 6.1.0.
• Depends on protobuf>=4.25.2,<5 for Python 3.11 and on protobuf>3.20.3,<5
  for 3.9 and 3.10.

Breaking Changes

• N/A

Deprecations

• Deprecated python 3.8 support.