Bump node-forge, @microsoft/sp-build-web and @microsoft/sp-webpart-workbench

Bumps [node-forge](https://github.com/digitalbazaar/forge), [@microsoft/sp-build-web](http://aka.ms/spfx) and [@microsoft/sp-webpart-workbench](http://aka.ms/spfx). These dependencies needed to be updated together.

Updates `node-forge` from 0.7.6 to 1.3.1
- [Release notes](https://github.com/digitalbazaar/forge/releases)
- [Changelog](https://github.com/digitalbazaar/forge/blob/main/CHANGELOG.md)
- [Commits](digitalbazaar/forge@0.7.6...v1.3.1)

Updates `@microsoft/sp-build-web` from 1.11.0 to 1.15.2

Updates `@microsoft/sp-webpart-workbench` from 1.11.0 to 1.12.1

---
updated-dependencies:
- dependency-name: node-forge
  dependency-type: indirect
- dependency-name: "@microsoft/sp-build-web"
  dependency-type: direct:development
- dependency-name: "@microsoft/sp-webpart-workbench"
  dependency-type: direct:development
...

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

Author: dependabot[bot]