Simplify update README workflow

.github/workflows/update-readme.yml

@@ -1,5 +1,8 @@
 name: Update README
-on: workflow_dispatch
+on:
+  workflow_dispatch:
+  release:
+    types: [published]
 
 permissions:
   contents: write
@@ -9,7 +12,7 @@ jobs:
   update-readme:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
     - name: Update README file
       run: |
        tagstmpfile=$(mktemp)
@@ -40,7 +43,7 @@ jobs:
       id: branch
       run: |
         BRANCH="githubaction-update-readme-$(date +%Y-%m-%d-%H-%M-%S)"
-        echo "::set-output name=branch::$BRANCH"
+        echo "branch=${BRANCH}" >> $GITHUB_OUTPUT
         git config --global user.email "41898282+github-actions[bot]@users.noreply.github.com"
         git config --global user.name "github-actions[bot]"
         git checkout -b "$BRANCH"
@@ -51,28 +54,14 @@ jobs:
       id: cpr
       env:
         SOURCE_BRANCH: ${{ steps.branch.outputs.branch }}
-      uses: actions/[email protected]
-      with:
-        github-token: ${{ secrets.GITHUB_TOKEN }}
-        script: |
-          let body = 'Auto-generated by GitHub Actions'
-
-          const { data: pr } = await github.rest.pulls.create({
-            title: `[${{ github.ref_name }}] update README with latest`,
-            body: body,
-            owner: context.repo.owner,
-            repo: context.repo.repo,
-            base: "${{ github.ref_name }}",
-            head: `${ process.env.SOURCE_BRANCH }`
-          });
-          await github.rest.issues.addLabels({
-            ...context.repo,
-            issue_number: pr.number,
-            labels: ["status/auto-created"],
-          });
-          console.log('Created new pull request');
-          return pr.html_url;
-    - name: Check outputs
-      if: ${{ env.changes_exist == 'true' }}
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       run: |
-        echo "Pull Request URL - ${{ steps.cpr.outputs.result }}"
+        PR_TITLE="[${GITHUB_REF_NAME}] update README with latest"
+        PR_BODY="Auto-generated by GitHub Actions"
+        EXISTING_PR=$(gh pr list --limit 500 --json title,url | jq --arg title "${PR_TITLE}" -r '.[] | select(.title==$title) | .url')
+        CREATED_PR=$(gh pr create --title "${PR_TITLE}" --body "${PR_BODY}" --label "status/auto-created" --base "${GITHUB_REF_NAME}" --head "${SOURCE_BRANCH}")
+        echo "Created pull request: ${CREATED_PR}" >> $GITHUB_STEP_SUMMARY
+        if [ -n "${EXISTING_PR}" ]; then
+            gh pr close --comment "Superseded by ${CREATED_PR}" --delete-branch "${EXISTING_PR}"
+            echo "Closed previous pull request: ${EXISTING_PR}" >> $GITHUB_STEP_SUMMARY
+        fi