chore: bump to version 3.9.12

Author: dvarrazzo

NEWS

@@ -1,15 +1,12 @@
-Future releases
+Current release
 ---------------
 
-What's new in psycopg 2.9.12 (unreleased)
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+What's new in psycopg 2.9.12
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 - Fix infinite loop with malformed interval (:ticket:`1835`).
 
 
-Current release
----------------
-
 What's new in psycopg 2.9.11
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 

setup.py

@@ -40,7 +40,7 @@
 # Take a look at https://www.python.org/dev/peps/pep-0440/
 # for a consistent versioning pattern.
 
-PSYCOPG_VERSION = '2.9.11'
+PSYCOPG_VERSION = '2.9.12'
 
 
 # note: if you are changing the list of supported Python version please fix