Update test_dates_parse_utc_offset_does_not_throw to expect January

It is parsing "0:4", french, with settings
```
                "PREFER_DATES_FROM": "past",
                "PREFER_DAY_OF_MONTH": "first",
                "PREFER_LOCALE_DATE_ORDER": True,
                "PREFER_MONTH_OF_YEAR": "current",
                "RELATIVE_BASE": datetime(
                    year=1970, month=1, day=1, hour=0, minute=0, second=0
                ),
```
It used to expect to get `expected_date=datetime(1969, 12, 31, 14, 4)` but after my change it gets `datetime(1969, 1, 31, 14, 4)`
I would argue that with PREFER_MONTH_OF_YEAR set to "Current", and "Current" being January 1st 1970, that `datetime(1969, 1, 31, 14, 4)` is a better result
However with this particular set of configuration, I am not exactly 100% sure what to expect. These settings were generated by a fuzzer so perhaps they don't really make a ton of sense together anyway; rather than change the settings (and thus deviate from what the parser caught) I have opted to update the test expectation to accept January.

tests/test_clean_api.py

@@ -119,7 +119,7 @@ def test_dates_which_match_locales_are_parsed(
                 languages=["en"],
                 region="",
                 date_formats=["%a", "%a", "%a", "%a"],
-                expected_date=datetime(1969, 12, 31, 14, 4),
+                expected_date=datetime(1969, 1, 31, 14, 4),
             )
         ]
     )