Bump version to 3.14.3

Author: rmk135

docs/main/changelog.rst

@@ -7,8 +7,8 @@ that were made in every particular version.
 From version 0.7.6 *Dependency Injector* framework strictly 
 follows `Semantic versioning`_
 
-Development version
--------------------
+3.14.3
+------
 - Fix issue with copying providers that have system streams injections
  (``sys.stdin``, ``sys.stdout`` and ``sys.stderr``).
 - Add support of six 1.12.0.

src/dependency_injector/__init__.py

@@ -1,6 +1,6 @@
 """Dependency injector top-level package."""
 
-__version__ = '3.14.2'
+__version__ = '3.14.3'
 """Version number that follows semantic versioning.
 
 :type: str