E0229 needs to be updated to new format

[sophiajt]

From: src/test/compile-fail/issue-23543.rs

Error E0229 needs a span_label, updating it from:

error[E0229]: associated type bindings are not allowed here
  --> src/test/compile-fail/issue-23543.rs:17:17
   |
17 |         where T<Bogus = Foo>: A;
   |                 ^^^^^^^^^^^

To:

error[E0229]: associated type bindings are not allowed here
  --> src/test/compile-fail/issue-23543.rs:17:17
   |
17 |         where T<Bogus = Foo>: A;
   |                 ^^^^^^^^^^^ associate type not allowed here

[mrabault]

I'd like to do this one.