ci: Don't cover type-checking-only code

Author: dbanty

Diff for: openapi_python_client/schema/openapi_schema_pydantic/callback.py

@@ -1,6 +1,6 @@
 from typing import TYPE_CHECKING, Dict
 
-if TYPE_CHECKING:
+if TYPE_CHECKING:  # pragma: no cover
     from .path_item import PathItem
 else:
     PathItem = "PathItem"  # pylint: disable=invalid-name

Diff for: openapi_python_client/schema/openapi_schema_pydantic/encoding.py

@@ -4,7 +4,7 @@
 
 from .reference import Reference
 
-if TYPE_CHECKING:
+if TYPE_CHECKING:  # pragma: no cover
     from .header import Header
 else:
     Header = "Header"  # pylint: disable=invalid-name