src/poky:python3-importlib-metadata: upgrade 7.1.0 -> 8.0.0

Changelog:
=============
- Message.__getitem__ now raises a KeyError on missing keys.
- Removed deprecated support for Distribution subclasses not implementing
  abstract methods.
- When reading installed files from an egg, use relative_to(walk_up=True) to
  honor files installed outside of the installation root.
- Deferred select imports in for speedup (python/cpython#109829).
- Updated fixtures for python/cpython#120801.

(From OE-Core rev: 6976b87b6eeb8ac406731782170f923c8835b446)

Signed-off-by: Wang Mingyu <wangmyfujitsu.com>
Signed-off-by: Alexandre Belloni <alexandre.bellonibootlin.com>
Signed-off-by: Richard Purdie <richard.purdielinuxfoundation.org>