skip check-manifest in pre-commit.ci

[graingert]

Remove this paragraph

Please have a look at our dev docs before submitting your PR:
https://github.com/twisted/ldaptor/blob/master/CONTRIBUTING.rst

Contributor Checklist:

• I have updated the release notes at docs/source/NEWS.rst
• I have updated the automated tests.
• All tests pass on your local dev environment. See CONTRIBUTING.rst.

[codecov]

Codecov Report

Merging #228 (5c3586b) into master (38fd9b9) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #228   +/-   ##
=======================================
  Coverage   83.28%   83.28%           
=======================================
  Files          87       87           
  Lines       11567    11567           
  Branches     1184     1184           
=======================================
  Hits         9634     9634           
  Misses       1815     1815           
  Partials      118      118           

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[adiroiban]

All good. Thanks