[pipeline] Upgrade emitter version and dependencies

Follow the steps with order:

1. run `git reset HEAD && git checkout . && git clean -fd && git checkout origin/main && git pull origin main`
2. checkout new branch python-bump-emitter-
3. run `npm install -g npm-check-updates`
4. run `npm install -g @azure-tools/typespec-client-generator-cli`
5. run `npx npm-check-updates --packageFile eng/emitter-package.json -u`
6. run `tsp-client generate-lock-file` to update `eng/emitter-package-lock.json`
7. commit change for file `eng/emitter-package.json` and `eng/emitter-package-lock.json`