[cbartz]

Overview

Use refresh=True in get_content secret calls

Rationale

otherwise a secret update will not be considered

Checklist

• The charm style guide was applied.
• The contributing guide was applied.
• The changes are compliant with ISD054 - Managing Charm Complexity
• The documentation for charmhub is updated.
• The PR is tagged with appropriate label (urgent, trivial, complex).
• The changelog is updated with changes that affects the users of the charm.
• The application version number is updated in github-runner-manager/pyproject.toml.

[cbartz]

all tests passing except https://github.com/canonical/github-runner-operator/actions/runs/24365631114/job/71334209843?pr=779 , which is unlikely failing to PR change (rather flakiness), and the 24.04 version did pass. will force merge