Remove mypy exclusion for sybil

Now that `pytest` is upgraded to v8, `sybil` will be upgraded to v6,
which provides type information, so we can remove the exclusion from
`mypy`.

This is part of the upgrade of repo-config from v0.8 to v0.9. See:
https://github.com/frequenz-floss/frequenz-repo-config-python/releases/tag/v0.9.0

Signed-off-by: Leandro Lucarella <[email protected]>

Author: llucax

pyproject.toml

@@ -192,8 +192,6 @@ module = [
   # The available stubs packages are outdated or incomplete (WIP/experimental):
   # https://github.com/frequenz-floss/frequenz-sdk-python/issues/430
   "networkx",
-  "sybil",
-  "sybil.*",
 ]
 ignore_missing_imports = true