STY: Add strict=True to zip() calls in pandas/_testing

- Add explicit strict=True to zip() calls in pandas/_testing/asserters.py (2 calls)
- Add explicit strict=True to zip() calls in pandas/_testing/_warnings.py (1 call)
- Satisfies Ruff rule B905 (zip-without-explicit-strict)

Towards #62434

Author: BreezeLune

pandas/_testing/_warnings.py

@@ -110,7 +110,7 @@ class for all warnings. To raise multiple types of exceptions,
                         if isinstance(match, tuple)
                         else (match,) * len(expected_warning)
                     )
-                    for warning_type, warning_match in zip(expected_warning, match):
+                    for warning_type, warning_match in zip(expected_warning, match, strict=True):
                         _assert_caught_expected_warnings(
                             caught_warnings=w,
                             expected_warning=warning_type,

pandas/_testing/asserters.py

@@ -675,7 +675,7 @@ def _raise(left, right, err_msg) -> NoReturn:
                 )
 
             diff = 0
-            for left_arr, right_arr in zip(left, right):
+            for left_arr, right_arr in zip(left, right, strict=True):
                 # count up differences
                 if not array_equivalent(left_arr, right_arr, strict_nan=strict_nan):
                     diff += 1
@@ -1447,7 +1447,7 @@ def assert_copy(iter1, iter2, **eql_kwargs) -> None:
     the same object. (Does not check that items
     in sequences are also not the same object)
     """
-    for elem1, elem2 in zip(iter1, iter2):
+    for elem1, elem2 in zip(iter1, iter2, strict=True):
         assert_almost_equal(elem1, elem2, **eql_kwargs)
         msg = (
             f"Expected object {type(elem1)!r} and object {type(elem2)!r} to be "