Revert "Use the base branch SHA for GitHub action."

This reverts commit 3e6773b.

Author: markafoltz

.github/workflows/auto-publish.yml

@@ -9,12 +9,10 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v2
-        with:
-          ref: "${{ github.event.pull_request.base.sha }}"
       - uses: w3c/spec-prod@v2
         with:
           GH_PAGES_BRANCH: gh-pages
           W3C_ECHIDNA_TOKEN: ${{ secrets.ECHIDNA_TOKEN }}
           W3C_WG_DECISION_URL: https://lists.w3.org/Archives/Public/public-secondscreen/2022Apr/0007.html
           W3C_BUILD_OVERRIDE: |
-            specStatus: CRD
+            specStatus: CRD