Bump multidict from 4.7.4 to 4.7.6

Bumps [multidict](https://github.com/aio-libs/multidict) from 4.7.4 to 4.7.6.
- [Release notes](https://github.com/aio-libs/multidict/releases)
- [Changelog](https://github.com/aio-libs/multidict/blob/master/CHANGES.rst)
- [Commits](aio-libs/multidict@v4.7.4...v4.7.6)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

requirements.txt

@@ -8,7 +8,7 @@ chardet==3.0.4
 discord.py==1.4.1
 idna==2.8
 lavalink==3.1.2
-multidict==4.7.4
+multidict==4.7.6
 mysql-connector==2.2.9
 python-dotenv==0.10.5
 requests==2.24.0