Bump tools/swift-sdk-generator from e006f30 to f63f812

Bumps [tools/swift-sdk-generator](https://github.com/apple/swift-sdk-generator) from `e006f30` to `f63f812`.
- [Commits](swiftlang/swift-sdk-generator@e006f30...f63f812)

---
updated-dependencies:
- dependency-name: tools/swift-sdk-generator
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]