Refactors our use of `slogtest` to instantiate a "standard logger" across most of our tests. This standard logger incorporates https://github.com/coder/slog/pull/217 to also ignore database query canceled errors by default, which are a source of low-severity flakes.
Any test that has set non-default `slogtest.Options` is left alone. In particular, `coderdtest` defaults to ignoring all errors. We might consider revisiting that decision now that we have better tools to target the really common flaky Error logs on shutdown.
* feat(provisioner): relax max terraform version constraint
* feat!(scripts/Dockerfile.base): update bundled terraform to 1.6.x
* bump terraform version in Dogfood image
* fix over-zealous rename
Updates the base Docker image to install Terraform version 1.3.4 (max supported version) by default.
Also updates documentation to reflect this change.
