fix(loki): send the logs to the arbutus loki instance

[tjzegmott]

This pull request updates logging configuration for Loki integration and improves how logging tags and headers are handled in the codebase. It also updates some dependencies and configuration values. The most important changes are grouped below:

Loki Logging Configuration Improvements:

• Refactored the logic for updating Loki logging tags in workflow/cli/run.py to avoid overwriting other logging configuration, ensuring only the relevant tags are updated and preserving other settings like headers.
• Modified the Loki configuration in workflow/lifecycle/configure.py to also retrieve and use custom HTTP headers (such as X-Scope-OrgID) when initializing the Loki logging handler. [1] [2]
• Updated the default Loki endpoint URL and added default Loki headers (X-Scope-OrgID: chime) in the workflow/workspaces/chimefrb.yml workspace configuration. [1] [2]

Dependency Updates:

• Replaced the python-logging-loki dependency with a specific git revision of python-logging-loki-v2 in pyproject.toml, likely to support new features such as custom headers.

Minor Configuration Cleanups:

• Minor formatting changes in pyproject.toml for consistency in the packages and env sections. [1] [2]

CI

• Expanded python matrix up to 3.14
• Refactor the installation step