[hvac] Clarify and improve some annotations (#13886)

stubs/hvac/hvac/aws_utils.pyi

@@ -1,9 +1,11 @@
+import requests
+
 class SigV4Auth:
     access_key: str
     secret_key: str
     session_token: str | None
     region: str
     def __init__(self, access_key: str, secret_key: str, session_token: str | None = None, region: str = "us-east-1") -> None: ...
-    def add_auth(self, request) -> None: ...
+    def add_auth(self, request: requests.PreparedRequest) -> None: ...
 
 def generate_sigv4_auth_request(header_value: str | None = None): ...

stubs/hvac/hvac/exceptions.pyi

@@ -1,9 +1,8 @@
 from collections.abc import Iterable
-from typing import Any
 from typing_extensions import Self
 
 class VaultError(Exception):
-    errors: Iterable[Any] | str | None
+    errors: Iterable[str] | str | None
     method: str | None
     url: str | None
     text: str | None
@@ -11,7 +10,7 @@ class VaultError(Exception):
     def __init__(
         self,
         message: str | None = None,
-        errors: Iterable[Any] | str | None = None,
+        errors: Iterable[str] | str | None = None,
         method: str | None = None,
         url: str | None = None,
         text: str | None = None,
@@ -22,7 +21,7 @@ class VaultError(Exception):
         cls,
         status_code: int,
         message: str | None = ...,
-        errors: Iterable[Any] | str | None = ...,
+        errors: Iterable[str] | str | None = ...,
         method: str | None = ...,
         url: str | None = ...,
         text: str | None = ...,

stubs/hvac/hvac/utils.pyi

@@ -16,7 +16,7 @@ def raise_for_error(
     url: str,
     status_code: int,
     message: str | None = None,
-    errors: Iterable[Any] | str | None = None,
+    errors: Iterable[str] | str | None = None,
     text: str | None = None,
     json: object | None = None,
 ) -> NoReturn: ...
@@ -42,4 +42,6 @@ def comma_delimited_to_list(list_param: Iterable[_T]) -> Iterable[_T]: ...
 # the docstring states that this function returns a bool, but the code does not return anything
 def validate_pem_format(param_name: str, param_argument: str) -> None: ...
 def remove_nones(params: Mapping[_K, _V | None]) -> Mapping[_K, _V]: ...
-def format_url(format_str: str, *args: Any, **kwargs: Any) -> str: ...
+def format_url(
+    format_str: str, *args: object, **kwargs: object
+) -> str: ...  # values are passed to builtins.str, which takes an object type