Bump version to 5.2

I don't think there were any API changes, but a change was made for Python 3.13.  I think a
minor version upgrade is warranted.

Author: mkleehammer

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "pyodbc"
-version = "5.1.0"
+version = "5.2.0"
 
 requires-python = ">=3.8"
 # This is used by the GitHub action that builds release artifacts using cibuildwheel.