Release 1.4.0 - Upgrade to protobuf 4.21.1.

Author: pcisar

docs/changelog.txt

@@ -2,6 +2,12 @@
 Changelog
 #########
 
+Version 1.4.0
+=============
+
+* Upgrade to protobuf 4.21.1. As this upgrade has consequences, please read
+  https://developers.google.com/protocol-buffers/docs/news/2022-05-06#python-updates
+
 Version 1.3.1
 =============
 

docs/conf.py

@@ -23,10 +23,10 @@
 author = 'Pavel Císař'
 
 # The short X.Y version
-version = '1.3.1'
+version = '1.4.0'
 
 # The full version, including alpha/beta/rc tags
-release = '1.3.1'
+release = '1.4.0'
 
 
 # -- General configuration ---------------------------------------------------

firebird/base/config_pb2.py

@@ -5,7 +5,7 @@ all-files=True
 
 [metadata]
 name = firebird-base
-version = 1.3.1
+version = 1.4.0
 description = Firebird base modules for Python
 long_description = file: README.rst
 long_description_content_type = text/x-rst; charset=UTF-8
@@ -35,7 +35,7 @@ classifiers =
 zip_safe = True
 python_requires = >=3.8, <4
 install_requires =
-    protobuf>=3.13.0
+    protobuf>=4.21.1
 packages = find_namespace:
 
 [options.packages.find]