publish v1.16.0.post1 (#7)

Follow-up to #5.
Similar to #6.

Proposes publishing a `1.16.0.post1` version, identical to version
`1.16.0` except that `load_library()` will no longer raise exceptions in
non-GPU environments.

## Notes for Reviewers

Checked
https://pypi.anaconda.org/rapidsai-wheels-nightly/simple/libucx-cu12/ to
confirm that it's exactly `1.16.0` that we want to do a post-release
for.

VERSION

@@ -1 +1 @@
-1.14.1.post1
+1.16.0.post1