infra: add -p to mkdir in lint steps (#17013)

Previously, if this did not find a mypy cache then it wouldnt run

this makes it always run

adding mypy ignore comments with existing uncaught issues to unblock other prs

---------

Co-authored-by: Erick Friis <erick@langchain.dev>
Co-authored-by: Bagatur <22008038+baskaryan@users.noreply.github.com>

libs/community/langchain_community/llms/oci_generative_ai.py

@@ -42,10 +42,10 @@ class OCIGenAIBase(BaseModel, ABC):
     If not specified , DEFAULT will be used 
     """
 
-    model_id: str = None
+    model_id: str = None  # type: ignore[assignment]
     """Id of the model to call, e.g., cohere.command"""
 
-    provider: str = None
+    provider: str = None  # type: ignore[assignment]
     """Provider name of the model. Default to None, 
     will try to be derived from the model_id
     otherwise, requires user input
@@ -54,10 +54,10 @@ class OCIGenAIBase(BaseModel, ABC):
     model_kwargs: Optional[Dict] = None
     """Keyword arguments to pass to the model"""
 
-    service_endpoint: str = None
+    service_endpoint: str = None  # type: ignore[assignment]
     """service endpoint url"""
 
-    compartment_id: str = None
+    compartment_id: str = None  # type: ignore[assignment]
     """OCID of compartment"""
 
     is_stream: bool = False
@@ -94,7 +94,7 @@ class OCIGenAIBase(BaseModel, ABC):
                 client_kwargs.pop("signer", None)
             elif values["auth_type"] == OCIAuthType(2).name:
 
-                def make_security_token_signer(oci_config):
+                def make_security_token_signer(oci_config):  # type: ignore[no-untyped-def]
                     pk = oci.signer.load_private_key_from_file(
                         oci_config.get("key_file"), None
                     )