* origin/main: (1146 commits)
  bpo-42064: Finalise establishing sqlite3 global state (pythonGH-27155)
  bpo-44678: Separate error message for discontinuous padding in binascii.a2b_base64 strict mode (pythonGH-27249)
  correct spelling (pythonGH-27076)
  bpo-44524: Add missed __name__ and __qualname__ to typing module objects (python#27237)
  bpo-27513: email.utils.getaddresses() now handles Header objects (python#13797)
  Clean up comma usage in Doc/library/functions.rst (python#27083)
  bpo-42238: Fix small rst issue in NEWS.d/. (python#27238)
  bpo-41972: Tweak fastsearch.h string search algorithms (pythonGH-27091)
  bpo-44340: Add support for building with clang full/thin lto (pythonGH-27231)
  bpo-44661: Update property_descr_set to use vectorcall if possible. (pythonGH-27206)
  bpo-44645: Check for interrupts on any potentially backwards edge (pythonGH-27216)
  bpo-41546: make pprint (like print) not write to stdout when it is None (pythonGH-26810)
  bpo-44554: refactor pdb targets (and internal tweaks) (pythonGH-26992)
  bpo-43086: Add handling for out-of-spec data in a2b_base64 (pythonGH-24402)
  bpo-44561: Update hyperlinks in Doc/distributing/index.rst (python#27032)
  bpo-42355: symtable.get_namespace() now checks whether there are multiple or any namespaces found (pythonGH-23278)
  bpo-44654: Do not export the union type related symbols (pythonGH-27223)
  bpo-44633: Fix parameter substitution of the union type with wrong types. (pythonGH-27218)
  bpo-44654: Refactor and clean up the union type implementation (pythonGH-27196)
  bpo-20291: Fix MSVC warnings in getargs.c (pythonGH-27211)
  ...