Upgrade dependencies to enable SnowAlert to run on EKS with IRSA

[edulop91]

Fixes #423.

Was having an issue where running on EKS with IRSA IAM credential source would yield the Can't pickle coroutine error. We figured out this was fixed on aioboto3 >= 8.0.0. Bumped a couple of dependencies to try and get us to aioboto3 >= 8.0.0

pip check with current deps:

snowflake-connector-python 2.2.10 has requirement cryptography<3.0.0,>=2.5.0, but you have cryptography 3.0.
google-auth 1.20.1 has requirement setuptools>=40.3.0, but you have setuptools 39.0.1.
boto3 1.14.20 has requirement botocore<1.18.0,>=1.17.20, but you have botocore 1.15.32.

pip check with old deps:

oscrypto 1.2.1 has requirement asn1crypto>=1.0.0, but you have asn1crypto 0.24.0.
google-auth 1.20.1 has requirement setuptools>=40.3.0, but you have setuptools 39.0.1.
aiobotocore 0.10.4 has requirement botocore<1.12.253,>=1.12.252, but you have botocore 1.12.253.

Have been running python runners/connectors_runner.py "AWS_COLLECT_%%" to verify and everything seems to work fine so far. Are there any other tests you suggest I could run to further verify?

[sfc-gh-afedorov]

Our automated tests cover the core use cases and they are happy with this change, so lgtm. Will be part of the next release and the snowsec/snowalert:1.9.6-rc branch until then.

[edulop91]

Perfect, thank you!

[edulop91]

Deployed 1.9.6-rc and verified working.