Bump tar and serverless

Removes [tar](https://github.com/isaacs/node-tar). It's no longer used after updating ancestor dependency [serverless](https://github.com/serverless/serverless). These dependencies need to be updated together.


Removes `tar`

Updates `serverless` from 3.40.0 to 4.31.2
- [Release notes](https://github.com/serverless/serverless/releases)
- [Changelog](https://github.com/serverless/serverless/blob/main/RELEASE_PROCESS.md)
- [Commits](https://github.com/serverless/serverless/compare/v3.40.0...sf-core@4.31.2)

---
updated-dependencies:
- dependency-name: tar
  dependency-version: 
  dependency-type: indirect
- dependency-name: serverless
  dependency-version: 4.31.2
  dependency-type: direct:development
...

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Author: dependabot[bot]