Update extensions.yml

Author: nicolethoen

.github/workflows/extensions.yml

@@ -14,4 +14,4 @@ jobs:
       - uses: actions/add-to-project@v0.3.0
         with:
           project-url: https://github.com/orgs/patternfly/projects/12
-          github-token: ${{ secrets.PF_ISSUES_PROJECT_SECRET }}
+          github-token: ${{ secrets.GH_PROJECTS }}