Use DOCS_BOT_PAT_BASE instead of sitepolicy specific token (#61322)

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: heiskr

.github/workflows/site-policy-reminder.yml

@@ -20,9 +20,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: peter-evans/create-or-update-comment@e8674b075228eee787fea43ef493e45ece1004c9
-        env:
-          GITHUB_TOKEN: ${{ secrets.API_TOKEN_SITEPOLICY }}
         with:
+          token: ${{ secrets.DOCS_BOT_PAT_BASE }}
           issue-number: ${{ github.event.pull_request.number }}
           body: |
             Before merging, please remember to change the title of this PR to a description of its changes that is suitable for public viewing on github/site-policy.

.github/workflows/site-policy-sync.yml

@@ -33,7 +33,7 @@ jobs:
         uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
         with:
           repository: github/site-policy
-          token: ${{ secrets.API_TOKEN_SITEPOLICY }}
+          token: ${{ secrets.DOCS_BOT_PAT_BASE }}
           fetch-depth: ''
           path: public-repo