3.9.5

Bug fixes

• Fixed "Unclosed client session" when initialization of
  :py:class:~aiohttp.ClientSession fails -- by :user:NewGlad.

  Related issues and pull requests on GitHub:
  aio-libs#8253.

• Fixed regression (from :pr:8280) with adding Content-Disposition to the form-data
  part after appending to writer -- by :user:Dreamsorcerer/:user:Olegt0rr.

  Related issues and pull requests on GitHub:
  aio-libs#8332.

• Added default Content-Disposition in multipart/form-data responses to avoid broken
  form-data responses -- by :user:Dreamsorcerer.

  Related issues and pull requests on GitHub:
  aio-libs#8335.

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