Creating a new version only tracks relevant files to git (#2726)

Summary:
Fixes an issue where unrelated files could get added to the `docusaurus-versions` branch. This broke GHA in the Ax repo since this was adding the results of running tutorials. Botorch doesn't run tutorials in CI but we still fix this to avoid other possible issues down the road.

Same fix as the Ax counterpart: facebook/Ax#3306

Pull Request resolved: #2726

Reviewed By: saitcakmak

Differential Revision: D69128162

Pulled By: CristianLara

fbshipit-source-id: 95c798cf5c10a1fe2ed21b719a64afdf8d53ff0e

.github/workflows/publish_website.yml

@@ -60,7 +60,7 @@ jobs:
         yarn
         yarn docusaurus docs:version ${{ inputs.new_version }}
 
-        git add --all
+        git add versioned_docs/ versioned_sidebars/ versions.json
         git commit -m "Create version ${{ inputs.new_version }} of site in Docusaurus"
         git push --force origin HEAD:docusaurus-versions
     - name: Build website