Depreciated Code Dependency in Merge Checks

[a-angeles13]

Noted in my comment in pull request #1016.

The check tests (3.7, minimal, postgresql; 3.7, minimal, mariadb; 3.9, minimal, sqlite; 3.10, minimal, sqlite) are failing due to depreciation in Werkzeug 2.1

Specifically, self.local.ident_func in line 215 of <test_path>/werkzeug/local.py is now depreciated and will not work in Python versions 3.7+. This was noted in a warning on line 34 of test of 3.7, minimal, postgresql in a previously successful merge. link.

I suggest that the merge check test suite be prioritized because any future pull requests will be blocked under any Werkzeug 2.1+.

[almet]

Hey, thanks for your input ! We've discussed this in #1015 and I think it should be solved when we merge it :-)