Update version numbers for TensorFlow 2.16.2
Before merging this PR, please double check that it has correctly updated
`core/public/version.h`, `tools/pip_package/setup.py`, and
`tensorflow/tensorflow.bzl`. Also review the execution notes below:

```
Major: 2 -> 2
Minor: 16 -> 16
Patch: 1 -> 2

No lingering old version strings "2.16.1" found in source directory 
"tensorflow/". Good.
No lingering old version strings "2.16.1" found in source directory 
"tensorflow/". Good.
```