Upgrade Python version to 3.10

[noliveleger]

Description

Use Python 3.10 in docker image

Additional info

Changes:

• Celery CLI syntax. options must come before app name

Removed:

• transifex-client. Only support 3.9 max. Support Python 3.10 issue. We use GitHub Actions to compile translations.
• nose

Packages that cannot be upgraded now:

package	pinned version	latest_version
psycopg2	2.8.4	2.9.1	UTC issue with Django 2.2
Werkzeug	2.0.3	2.1.1	issue with Django extension
PyMongo	3.12.3	4.1.0	MongoDB version issue: pymongo.errors.ConfigurationError: Server at mongo.kobo.private:27017 reports wire version 5, but this version of PyMongo requires at least 6 (MongoDB 3.6).

Related issues

kobotoolbox/kpi#3759

[bufke]

You missed my sneaky .gitlab-ci.yml test that references python:3.8 🐧

Aside: I can't leave a comment that isn't related to a diff in a review, right? Why not GitHub.

[bufke]

Looks good to me aside from my comments. After changes are made, this is good to merge IMO.

[bufke]

Is this any better than just celery? It's saying use celery >= 5. So 6 would match that too. Any pip-compile --upgrade would pick the newest compatible version, so maybe unnecessary to specify a minimum version. I'm new to pip-tools so maybe I'm missing something.

Personally I prefer the ^ and ~ syntax to tie things to major and minor versions. Then liberally upgrading patch versions via pip-compile --upgrade quite often to deliver security patches without major version changes.

[noliveleger]

Actually, it did not want to upgrade to latest one on my environment. Indeed >=5 should not required to install the latest version.
I'll try again and change it if it works as expected.