Enable concurrency

Author: koki-develop

.github/workflows/update-docs.yml

@@ -5,6 +5,10 @@ on:
     branches:
       - main
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   update-docs:
     runs-on: ubuntu-latest