Update tf-nightly requirement to use stable tensorflow release

Now use the stable tensorflow release tensorflow>=2.16.1

Can't run presubmit tests due to another python version issue, but
have verified it locally.

Change-Id: I18f216f4d30e3195cf4a663c2391acec2b948431

python-requirements.txt

diff --git a/python-requirements.txt b/python-requirements.txt
index 88e4ca1..c51f24e 100644
--- a/python-requirements.txt
+++ b/python-requirements.txt
@@ -20,7 +20,7 @@
 # Robot test framework for FPGA tests
 pyserial
 
-# camkes-deps
+# cmakes-deps
 
 # Flatbuffers for TBM trace data
 flatbuffers==23.5.26
@@ -42,7 +42,6 @@
 scipy
 sel4-deps
 setuptools
-# TODO(lundong): not pin nightly after TOSA features are in release ver.
-tf-nightly==2.16.0.dev20240129
+tensorflow>=2.16.1
 wget
 yapf