Update tf-nightly version to 2.16.0.dev20231211

As the currently pinned tf-nightly version aged out, update it to a more
recent version.

Note that currently we can't update to the latest tf-nightly version due to an ongoing upstream issue.
2.16.0.dev20231211 is the most recent version that doesn't cause any breakage.

Change-Id: I3a2f5c10f545b10b1ee74e391f7a67f230f720f8

python-requirements.txt

diff --git a/python-requirements.txt b/python-requirements.txt
index 5750f55..46d62c1 100644
--- a/python-requirements.txt
+++ b/python-requirements.txt
@@ -43,6 +43,6 @@
 sel4-deps
 setuptools
 # TODO(lundong): not pin nightly after TOSA features are in release ver.
-tf-nightly==2.16.0.dev20231025
+tf-nightly==2.16.0.dev20231211
 wget
 yapf