PEP 823: None-aware access operators

Author: cdce8p

.github/CODEOWNERS

@@ -699,6 +699,7 @@ peps/pep-0819.rst  @emmatyping
 peps/pep-0820.rst  @encukou
 peps/pep-0821.rst  @JelleZijlstra
 peps/pep-0822.rst  @methane
+peps/pep-0823.rst  @gvanrossum
 # ...
 peps/pep-2026.rst  @hugovk
 # ...