Bump required aiohttp version to 3.7.4 (#2509)

Commit history before merge:

* Bump required aiohttp version to 3.7.4

This release includes an important security fix
(https://github.com/aio-libs/aiohttp/security/advisories/GHSA-v6wp-4m6f-gcjg) and many
other improvements.

* add changelog entry
* Let's not forget about Pipfile

Co-authored-by: Richard Si <63936253+ichard26@users.noreply.github.com>

CHANGES.md

@@ -5,6 +5,7 @@
 ### _Blackd_
 
 - Remove dependency on aiohttp-cors (#2500)
+- Bump required aiohttp version to 3.7.4 (#2509)
 
 ## 21.9b0
 

Pipfile

@@ -40,7 +40,7 @@ readme_renderer = "*"
 black = {editable = true, extras = ["d", "jupyter"], path = "."}
 
 [packages]
-aiohttp = ">=3.6.0"
+aiohttp = ">=3.7.4"
 platformdirs= ">=2"
 click = ">=8.0.0"
 mypy_extensions = ">=0.4.3"

setup.py

@@ -86,7 +86,7 @@ def get_long_description() -> str:
         "mypy_extensions>=0.4.3",
     ],
     extras_require={
-        "d": ["aiohttp>=3.6.0"],
+        "d": ["aiohttp>=3.7.4"],
         "colorama": ["colorama>=0.4.3"],
         "python2": ["typed-ast>=1.4.2"],
         "uvloop": ["uvloop>=0.15.2"],