fix: Add input append_body and generate_release_notes, set both to true

[0xFable]

This should: Allow us to pass the artifact versions.txt and have it appended to the generated release notes https://github.com/softprops/action-gh-release/blob/4634c16e79c963813287e889244c50009e7f0981/src/github.ts#L244

Description and Motivation

Related Issues

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Checklist:

• [X] I have read Migaloo's contribution guidelines.
• [X] My pull request has a sound title and description (not something vague like Update index.md)
• [X] All existing and new tests are passing.
• [X] I updated/added relevant documentation.
• [X] The code is formatted properly cargo fmt --all --.
• [X] Clippy doesn't report any issues cargo clippy -- -D warnings.
• [X] I have regenerated the schemas if needed cargo schema.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (757117d) 94.46% compared to head (ced0ad6) 94.46%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #286 +/- ## ======================================= Coverage 94.46% 94.46% ======================================= Files 219 219 Lines 24858 24858 ======================================= Hits 23482 23482 Misses 1376 1376 ```

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