Bump node-fetch and morphir-elm in /morphir-decoration-extension

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


Removes `node-fetch`

Updates `morphir-elm` from 2.80.0 to 2.86.0
- [Release notes](https://github.com/finos/morphir-elm/releases)
- [Changelog](https://github.com/finos/morphir-elm/blob/main/CHANGELOG.md)
- [Commits](v2.80.0...v2.86.0)

---
updated-dependencies:
- dependency-name: node-fetch
  dependency-type: indirect
- dependency-name: morphir-elm
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>