Update ci.yml

.github/workflows/ci.yml

@@ -6,6 +6,10 @@ on:
       - master
   pull_request:
 
+concurrency:
+  group: ci-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   scalafmt:
     timeout-minutes: 1
@@ -18,13 +22,7 @@ jobs:
     timeout-minutes: 5
     runs-on: ubuntu-latest
     steps:
-      - name: Cancel Previous Runs
-        uses: styfle/cancel-workflow-action@0.8.0
-        with:
-          access_token: ${{ github.token }}
-
       - uses: actions/checkout@v2
-      - uses: laughedelic/coursier-setup@v1
       - uses: coursier/cache-action@v6
 
       - name: Resolve dependencies