reenable observable deploy (#591)

Author: mythmon

.github/workflows/deploy.yml

@@ -47,8 +47,7 @@ jobs:
           directory: dist
           gitHubToken: ${{ secrets.GITHUB_TOKEN }}
       # TODO: This doesn't include the examples. How can we fix that?
-      # TODO: Fix the token permissions and re-enable deploy.
-      # - name: Deploy to Observable Cloud
-      #   run: yarn deploy -m "$(git log -1 --pretty=%s)"
-      #   env:
-      #     OBSERVABLE_TOKEN: ${{ secrets.OBSERVABLE_API_TOKEN }}
+      - name: Deploy to Observable Cloud
+        run: yarn deploy -m "$(git log -1 --pretty=%s)"
+        env:
+          OBSERVABLE_TOKEN: ${{ secrets.OBSERVABLE_API_TOKEN }}