Add Serverless definitions for v2.63.0

[mars-lan]

2.63 has just been released: https://github.com/serverless/serverless/releases/tag/v2.63.0

[fredericbarthelet]

Hi @mars-lan, thanks for your contribution. However, new release of this package are triggered by Github repository dispatches. A Github actions then takes care of pulling serverless/serverless latest version, build the new TypeScript definitions, commit them, add a tag et release a new version of this repository to npm. You can find the details of this workflow in https://github.com/serverless/typescript/blob/master/.github/workflows/definitionsBuilder.yml

Version 2.63.0 has been published this morning, but no changes occurred that were relevant to a TypeScript definition change compared to v2.62.0. Hope those details help :)

[mars-lan]

@fredericbarthelet there is a type change in 2.63 due to serverless/serverless#9912

[fredericbarthelet]

Indeed there is this new versioning boolean. Thanks for the contribution @mars-lan :)