release: Release cloud_events 0.8.3 (was 0.8.2)

[github-actions]

This pull request prepares new releases for the following components:

• cloud_events 0.8.3 (was 0.8.2)

For each releasable component, this pull request modifies the version and provides an initial changelog entry based on conventional commit messages. You can edit these changes before merging, to release a different version or to alter the changelog text.

• To confirm this release, merge this pull request, ensuring the "release: pending" label is set. The release script will trigger automatically on merge.
• To abort this release, close this pull request without merging.

The generated changelog entries have been copied below:

---

cloud_events

• FIXED: Fixed default charset behavior for various non-text/plain content types

[github-actions]

Starting release automation. See https://github.com/cloudevents/sdk-ruby/actions/runs/21040012858 for execution logs.

[github-actions]

Release job results

• Job started 2026-01-15 17:19:40 UTC
• Job finished 2026-01-15 17:20:10 UTC
• Release SHA: e66e4a0
• Release pull request: release: Release cloud_events 0.8.3 (was 0.8.2) #112
• All releases completed successfully.
• Run logs: https://github.com/cloudevents/sdk-ruby/actions/runs/21040012858

cloud_events 0.8.3

• Created release with tag cloud_events/v0.8.3 on GitHub.
• Rubygems push for cloud_events 0.8.3.
• Published documentation for cloud_events 0.8.3.