Bump for release

NEWS.rst

+21.2.3 (2021-08-06)
+===================
+
+
+
+Bug Fixes
+---------
+
+- Modify the ``sysconfig.get_preferred_scheme`` function check to be
+  compatible with CPython 3.10’s alphareleases. (`#10252 <https://github.com/pypa/pip/issues/10252>`_)
+
+
 21.2.2 (2021-07-31)
 ===================
 

news/10252.bugfix.rst

-Modify the ``sysconfig.get_preferred_scheme`` function check to be
-compatible with CPython 3.10’s alphareleases.

src/pip/__init__.py

 from typing import List, Optional
 
-__version__ = "21.2.2"
+__version__ = "21.2.3"
 
 
 def main(args: Optional[List[str]] = None) -> int: