chore: replace semver dependency with packaging (#1311)

Fixes #1296 per title. See
https://github.com/lancedb/lancedb/pull/1298#discussion_r1603931457 Cc
@wjones127

---------

Co-authored-by: Will Jones <willjones127@gmail.com>

python/python/lancedb/rerankers/cohere.py

@@ -1,5 +1,5 @@
 import os
-import semver
+from packaging.version import Version
 from functools import cached_property
 from typing import Union
 
@@ -44,9 +44,8 @@ class CohereReranker(Reranker):
     def _client(self):
         cohere = attempt_import_or_raise("cohere")
         # ensure version is at least 0.5.0
-        if (
-            hasattr(cohere, "__version__")
-            and semver.compare(cohere.__version__, "5.0.0") < 0
+        if hasattr(cohere, "__version__") and Version(cohere.__version__) < Version(
+            "0.5.0"
         ):
             raise ValueError(
                 f"cohere version must be at least 0.5.0, found {cohere.__version__}"