Add GH workflow

.github/workflows/generate-package-versions.yml

@@ -0,0 +1,23 @@
+name: Generate Package Versions
+on:
+  schedule:
+    - cron: '0 0 * * 0' # runs weekly on Sunday
+  workflow_dispatch: # we can trigger manually
+
+jobs:
+  generate-package-versions:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: ddtrace
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          path: ddtrace
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.10"
+
+    - name: Run regenerate-riot-latest
+      run: ./scripts/regenerate-riot-latest.sh