Convert the given file name by the dedicated method, and re-use
the converted name instead of the given argument.

The common part of `shift_log_age` and `shift_log_period`.

In the case log shifted by another process, opened log device was
returned.

Fix #80

Warn wrong code, #100:
> Some Ruby apps subclass Logger without running the superclass
> constructor, which means that `@level_override` isn't initialized
> properly.

ref: https://bugs.ruby-lang.org/issues/21133

Creating a logger automatically writes a hardcoded
header comment ("# Logfile created on ...").
While this helps verify that logdev is writable as
early as possible (rather than on the first log entry),
it also serves as a useful indicator of which program created
the logfile.

However, this header can introduce unnecessary
complexity -- especially when working with third-party
tools that need to ignore these lines.

This commit introduces a `skip_header` boolean
option (default is `false`), allowing API consumers
to disable the header if needed.

Bumps [step-security/harden-runner](https://github.com/step-security/harden-runner) from 2.10.4 to 2.11.0.
- [Release notes](https://github.com/step-security/harden-runner/releases)
- [Commits](step-security/harden-runner@cb605e5...4d991eb)

---
updated-dependencies:
- dependency-name: step-security/harden-runner
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

…rity/harden-runner-2.11.0

Bump step-security/harden-runner from 2.10.4 to 2.11.0

[Feature #21133] Add `skip_header` option