chore: fix declaration of PQsetTraceFlags in pyi

Running 'python -m psycopg.pq._pq_ctypes' currently produces a diff
because _PQsetTraceFlags is not present in .pyi but PQsetTraceFlags is.

diff --git a/psycopg/psycopg/pq/_pq_ctypes.pyi b/psycopg/psycopg/pq/_pq_ctypes.pyi
index 5d2ee3f8fbc16d288a966284ebdb34837a2061f5..545fec42155bef80129f180ec1c55d12b6718696 100644 (file)
--- a/psycopg/psycopg/pq/_pq_ctypes.pyi
+++ b/psycopg/psycopg/pq/_pq_ctypes.pyi
@@ -112,6 +112,7 @@ def PQtrace(
     arg1: Optional[PGconn_struct],
     arg2: _Pointer[FILE],  # type: ignore[type-var]
 ) -> None: ...
+def PQsetTraceFlags(arg1: Optional[PGconn_struct], arg2: int) -> None: ...
 def PQencryptPasswordConn(
     arg1: Optional[PGconn_struct],
     arg2: bytes,
@@ -199,7 +200,7 @@ def PQsetSingleRowMode(arg1: Optional[PGconn_struct]) -> int: ...
 def PQgetCancel(arg1: Optional[PGconn_struct]) -> PGcancel_struct: ...
 def PQfreeCancel(arg1: Optional[PGcancel_struct]) -> None: ...
 def PQputCopyData(arg1: Optional[PGconn_struct], arg2: bytes, arg3: int) -> int: ...
-def PQsetTraceFlags(arg1: Optional[PGconn_struct], arg2: int) -> None: ...
+def _PQsetTraceFlags(arg1: Optional[PGconn_struct], arg2: int) -> None: ...
 def PQuntrace(arg1: Optional[PGconn_struct]) -> None: ...
 def PQfreemem(arg1: Any) -> None: ...
 def _PQencryptPasswordConn(arg1: Optional[PGconn_struct], arg2: bytes, arg3: bytes, arg4: bytes) -> Optional[bytes]: ...