chore(deps): remove unused dycw-pytest-only dev dependency (#74)

Removes the `dycw-pytest-only` dev dependency, which isn't used anywhere
in the test suite, and updates `uv.lock` accordingly.

Author: vdusek

pyproject.toml

@@ -43,7 +43,6 @@ dependencies = []
 
 [dependency-groups]
 dev = [
-    "dycw-pytest-only<3.0.0",
     "poethepoet<1.0.0",
     "pre-commit<5.0.0",
     "pytest-asyncio<2.0.0",