v0.49.28

## Changelog
### Fixed
* d77b67ac31cd88fcfc9bf9f8e1ad44729d983f09: fix(copilot): update generator (@andreynering)
* cb401b6a2c4a2b1c2a945478be1c86028cf9b3ec: fix(openai): adjust cache pricing (#446) (@moshemarciano)
### Other stuff
* f7076a2d933f2d365aa1ac72e42c6f971f1fbe71: chore(copilot): update models (@andreynering)
* c9becdbbc95acd6b2413a798faf37fb09351ae40: chore: auto-update generated files (#447) (@github-actions[bot])

---

<details>
<summary>Verifying the artifacts</summary>

First, download the [`checksums.txt` file](https://github.com/charmbracelet/catwalk/releases/download/v0.49.28/checksums.txt) and the [`checksums.txt.sigstore.json` file](https://github.com/charmbracelet/catwalk/releases/download/v0.49.28/checksums.txt.sigstore.json) files, for example, with `wget`:

```bash
wget 'https://github.com/charmbracelet/catwalk/releases/download/v0.49.28/checksums.txt'
wget 'https://github.com/charmbracelet/catwalk/releases/download/v0.49.28/checksums.txt.sigstore.json'
```

Then, verify it using [`cosign`](https://github.com/sigstore/cosign):

```bash
cosign verify-blob \
  --certificate-identity 'https://github.com/charmbracelet/meta/.github/workflows/goreleaser.yml@refs/heads/main' \
  --certificate-oidc-issuer 'https://token.actions.githubusercontent.com' \
  --bundle 'checksums.txt.sigstore.json' \
  ./checksums.txt
```

If the output is `Verified OK`, you can safely use it to verify the checksums of other artifacts you downloaded from the release using `sha256sum`:

```bash
sha256sum --ignore-missing -c checksums.txt
```

Done! You artifacts are now verified!

</details>

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