upgrade-mediabunny - Claude MCP Skill

- Find the latest version of Mediabunny: `npm view mediabunny version`
- Look in the root package.json and update the version of Mediabunny to that version in the `catalog` section.
- Also upgrade @mediabunny/mp3-encoder and @mediabunny/ac3 to the same version in the `catalog` section.
- Look in packages/template-\*/package.json and update the version of Mediabunny (and @mediabunny/\* packages if present) to the same version. Templates use explicit versions (not `catalog:`), so they must be updated manually.
- Update `packages/cli/src/extra-packages.ts` with the new Mediabunny version.
- Update `packages/studio-shared/src/package-info.ts` with the new Mediabunny version in `extraPackages`.
- Update `packages/docs/docs/mediabunny/version.mdx` compatiblity table. To find the next version this upgrade is going to be applied, look in the root package.json for the version and increment the patch version by one
- Run `bun i` in the end.