Bump aiohttp from 3.6.3 to 3.7.4

Bumps [aiohttp](https://github.com/aio-libs/aiohttp) from 3.6.3 to 3.7.4.
- [Release notes](https://github.com/aio-libs/aiohttp/releases)
- [Changelog](https://github.com/aio-libs/aiohttp/blob/master/CHANGES.rst)
- [Commits](https://github.com/aio-libs/aiohttp/compare/v3.6.3...v3.7.4)

Signed-off-by: dependabot[bot] <support@github.com>

requirements.txt

@@ -1,25 +1,19 @@
-#
-# These requirements were autogenerated by pipenv
-# To regenerate from the project's Pipfile, run:
-#
-#    pipenv lock --requirements
-#
-
--i https://pypi.org/simple
-aiohttp==3.6.3; python_full_version >= '3.5.3'
+-i https://pypi.org/simple/
+aiohttp==3.7.4
 apscheduler==3.6.3
-async-timeout==3.0.1; python_full_version >= '3.5.3'
-attrs==20.3.0; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
+async-timeout==3.0.1
+attrs==20.3.0
 chardet==3.0.4
 dateparser==1.0.0
-discord.py==1.5.1
-idna==2.10; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
-multidict==4.7.6; python_version >= '3.5'
-python-dateutil==2.8.1; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
+discord.py==1.6.0
+idna==3.1
+multidict==5.1.0
+python-dateutil==2.8.1
 python-dotenv==0.15.0
-pytz==2020.5
+pytz==2021.1
 regex==2020.11.13
-six==1.15.0; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
+six==1.15.0
 sqlalchemy==1.3.22
-tzlocal==2.1
-yarl==1.5.1; python_version >= '3.5'
+typing-extensions==3.7.4.3
+tzlocal==3.0b1
+yarl==1.6.3