[CI/Build] Automate PR body text cleanup (#10082)

Signed-off-by: Russell Bryant <rbryant@redhat.com>

.github/workflows/cleanup_pr_body.yml

@@ -0,0 +1,23 @@
+name: Cleanup PR Body
+
+on:
+  pull_request:
+    types: [opened, edited, synchronize]
+
+jobs:
+  update-description:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4.2.1
+
+      - name: Set up Python
+        uses: actions/setup-python@f677139bbe7f9c59b41e40162b753c062f5d49a3 # v5.2.0
+        with:
+          python-version: '3.12'
+
+      - name: Update PR description
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: .github/scripts/cleanup_pr_body.sh "${{ github.event.number }}"