fix(client): loosen auth header validation

Author: stainless-app[bot]

src/postgrid/_client.py

@@ -186,14 +186,7 @@ def default_headers(self) -> dict[str, str | Omit]:
 
     @override
     def _validate_headers(self, headers: Headers, custom_headers: Headers) -> None:
-        if self.address_verification_api_key and headers.get("X-API-Key"):
-            return
-        if isinstance(custom_headers.get("X-API-Key"), Omit):
-            return
-
-        if self.print_mail_api_key and headers.get("X-API-Key"):
-            return
-        if isinstance(custom_headers.get("X-API-Key"), Omit):
+        if headers.get("X-API-Key") or isinstance(custom_headers.get("X-API-Key"), Omit):
             return
 
         raise TypeError(
@@ -421,14 +414,7 @@ def default_headers(self) -> dict[str, str | Omit]:
 
     @override
     def _validate_headers(self, headers: Headers, custom_headers: Headers) -> None:
-        if self.address_verification_api_key and headers.get("X-API-Key"):
-            return
-        if isinstance(custom_headers.get("X-API-Key"), Omit):
-            return
-
-        if self.print_mail_api_key and headers.get("X-API-Key"):
-            return
-        if isinstance(custom_headers.get("X-API-Key"), Omit):
+        if headers.get("X-API-Key") or isinstance(custom_headers.get("X-API-Key"), Omit):
             return
 
         raise TypeError(