Merge pull request #349 from tutorcruncher/dependabot/pip/arq-0.20

Bump arq from 0.19.1 to 0.20

Author: alextford11

tcsocket/requirements.txt

@@ -2,7 +2,7 @@ SQLAlchemy==1.3.23
 aiodns==2.0.0
 aiohttp==3.7.4
 aiopg==1.1.0
-arq==0.19.1
+arq==0.20
 boto3==1.17.62
 cchardet==2.1.7
 gunicorn==20.0.4