Bump maximum supported CPython version in pyo3-ffi

Author: clin1234

pyo3-ffi/build.rs

@@ -17,7 +17,7 @@ const SUPPORTED_VERSIONS_CPYTHON: SupportedVersions = SupportedVersions {
     min: PythonVersion { major: 3, minor: 7 },
     max: PythonVersion {
         major: 3,
-        minor: 13,
+        minor: 14,
     },
 };