[DPE-5289]: CI runs on new juju versions

[Gu1nness]

• Use juju 3.5.3 in regular runs
• Runs also 3.6/beta on nightly runs

[carlcsaposs-canonical]

you may need to specify base when deploying with libjuju so that it doesn't default to focal cc @shayancanonical

[Gu1nness]

you may need to specify base when deploying with libjuju so that it doesn't default to focal cc @shayancanonical

In the end I was asked to remove the nightly runs on 3.6 so it shouldn't be an issue anymore, right?

[carlcsaposs-canonical]

so it shouldn't be an issue anymore, right

think so!

[MiaAltieri]

Does test_mongos.py fail due to this bump? Or does it fail generally?

[Gu1nness]

Does test_mongos.py fail due to this bump? Or does it fail generally?

It fails generally, it is missing a retry for the get_related_username_password. We had the same issue on MongoDB VM a few weeks ago with get_connection_string if you remember.
It will be fixed when the secret-data ticket will be fixed.