Revert "chore: fix test and lint packages versions"

This reverts commit c47e085.

pyproject.toml

@@ -48,8 +48,8 @@ dynamic = ['version']
 # Can be installed with `pip install telegram-spotted-dmi-bot[dependency]`
 # e.g. `pip install telegram-spotted-dmi-bot[test]`
 [project.optional-dependencies]
-test = ["pytest==7.1.1", "pytest-asyncio==0.23.5", "pytest-cov==3.0.0", "pytest-mock==3.12.0"]
-lint = ["pylint==2.12.2", "black==24.2.0", "isort==5.10.1"]
+test = ["pytest", "pytest-asyncio", "pytest-cov", "pytest-mock"]
+lint = ["pylint", "black", "isort"]
 
 # URLs of the project
 [project.urls]

src/spotted/handlers/spam_comment.py

@@ -7,7 +7,7 @@
 from spotted.utils import EventInfo
 
 
-async def spam_comment_msg(update: Update, context: CallbackContext) -> None:
+async def spam_comment_msg(update: Update, context: CallbackContext):
     """Handles a spam comment on a post in the comment group.
     Deletes the original post.