Fix snappy version

Author: jonashaag

pandas/compat/_optional.py

@@ -72,6 +72,10 @@ def get_version(module: types.ModuleType) -> str:
         if module.__name__ == "brotli":
             # brotli doesn't contain attributes to confirm it's version
             return ""
+        if module.__name__ == "snappy":
+            # snappy doesn't contain attributes to confirm it's version
+            # See https://github.com/andrix/python-snappy/pull/119
+            return ""
         raise ImportError(f"Can't determine version for {module.__name__}")
     if module.__name__ == "psycopg2":
         # psycopg2 appends " (dt dec pq3 ext lo64)" to it's version