build(deps): bump http-cache-semantics and scratch-blocks

Removes [http-cache-semantics](https://github.com/kornelski/http-cache-semantics). It's no longer used after updating ancestor dependency [scratch-blocks](https://github.com/scratchfoundation/scratch-blocks). These dependencies need to be updated together.


Removes `http-cache-semantics`

Updates `scratch-blocks` from 1.0.2 to 1.1.50
- [Release notes](https://github.com/scratchfoundation/scratch-blocks/releases)
- [Changelog](https://github.com/scratchfoundation/scratch-blocks/blob/develop/CHANGELOG.md)
- [Commits](scratchfoundation/scratch-blocks@v1.0.2...v1.1.50)

---
updated-dependencies:
- dependency-name: http-cache-semantics
  dependency-type: indirect
- dependency-name: scratch-blocks
  dependency-type: direct:production
...

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