Do not check | in type hints in WPS226

[dolfinus]

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I have made things!

In my project I use a lot of new-style annotations - Type1 | Type2 instead of Union[Type1, Type2] provided by Python 3.10. To get these annotations work on previous Python versions (e.g. 3.7) I use from __future__ import annotations, which converts all type hints to strings, so it is actually stored in __annotations__ like "Type1 | Type2".

If module contains a lot of optional annotations, such as:

class MyClass:
  field1: int | None
  field2: str | None
  fiels3: datetime | int | None

...
class MyClass2(MyClass):
  fiels4: SomeType | None

and so on, WPS226 starts to fail:

WPS226 Found string literal over-use: |

In this PR I've added | literal to list of ignored strings which should fix the issue.

Checklist

• [X I have double checked that there are no unrelated changes in this pull request (old patches, accidental config files, etc)
• [X] I have created at least one test case for the changes I have made
• [X] I have updated the documentation for the changes I have made
• [X] I have added my changes to the CHANGELOG.md

Related issues

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[codecov[bot]]

Codecov Report

Merging #2495 (8b43691) into master (8f95f17) will not change coverage. The diff coverage is n/a.

@@            Coverage Diff            @@
##            master     #2495   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          120       120           
  Lines         6422      6422           
  Branches      1447      1447           
=========================================
  Hits          6422      6422           

Impacted Files	Coverage Δ
...hon_styleguide/visitors/ast/complexity/overuses.py	100.00% <ø> (ø)

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[dolfinus]

PR is approved, how about merging?