test: use IsOneOf

tests/test_annotated.py

@@ -1,5 +1,5 @@
 import pytest
-from dirty_equals import IsDict, IsStr
+from dirty_equals import IsDict, IsOneOf
 from fastapi import APIRouter, FastAPI, Query
 from fastapi.testclient import TestClient
 from fastapi.utils import match_pydantic_error_url
@@ -57,11 +57,11 @@ foo_is_short = {
             {
                 "ctx": {"min_length": 1},
                 "loc": ["query", "foo"],
-                "msg": (
+                "msg": IsOneOf(
                     # PydanticV2.4
-                    IsStr("String should have at least 1 characters") or
+                    "String should have at least 1 characters",
                     # PydanticV2.5
-                    IsStr("String should have at least 1 character"),
+                    "String should have at least 1 character",
                 ),
                 "type": "string_too_short",
                 "input": "",