GHA for automatically canceling previous CI runs (#5025)

.github/workflows/cancel-duplicate-runs.yaml

@@ -0,0 +1,14 @@
+name: Cancel
+on:
+  workflow_run:
+    workflows: ["CI", "CI Additional", "CI Upstream"]
+    types:
+      - requested
+jobs:
+  cancel:
+    name: Cancel previous runs
+    runs-on: ubuntu-latest
+    steps:
+    - uses: styfle/[email protected]
+      with:
+        workflow_id: ${{ github.event.workflow.id }}

.github/workflows/ci-additional.yaml

@@ -45,10 +45,6 @@ jobs:
             "py38-flaky",
           ]
     steps:
-      - name: Cancel previous runs
-        uses: styfle/[email protected]
-        with:
-          access_token: ${{ github.token }}
       - uses: actions/checkout@v2
         with:
           fetch-depth: 0 # Fetch all history for all branches and tags.
@@ -120,10 +116,6 @@ jobs:
         shell: bash -l {0}
 
     steps:
-      - name: Cancel previous runs
-        uses: styfle/[email protected]
-        with:
-          access_token: ${{ github.token }}
       - uses: actions/checkout@v2
         with:
           fetch-depth: 0 # Fetch all history for all branches and tags.
@@ -161,10 +153,6 @@ jobs:
         shell: bash -l {0}
 
     steps:
-      - name: Cancel previous runs
-        uses: styfle/[email protected]
-        with:
-          access_token: ${{ github.token }}
       - uses: actions/checkout@v2
         with:
           fetch-depth: 0 # Fetch all history for all branches and tags.
@@ -205,10 +193,6 @@ jobs:
         shell: bash -l {0}
 
     steps:
-      - name: Cancel previous runs
-        uses: styfle/[email protected]
-        with:
-          access_token: ${{ github.token }}
       - uses: actions/checkout@v2
         with:
           fetch-depth: 0 # Fetch all history for all branches and tags.

.github/workflows/ci.yaml

@@ -37,10 +37,6 @@ jobs:
         os: ["ubuntu-latest", "macos-latest", "windows-latest"]
         python-version: ["3.7", "3.8"]
     steps:
-      - name: Cancel previous runs
-        uses: styfle/[email protected]
-        with:
-          access_token: ${{ github.token }}
       - uses: actions/checkout@v2
         with:
           fetch-depth: 0 # Fetch all history for all branches and tags.

.github/workflows/upstream-dev-ci.yaml

@@ -47,10 +47,6 @@ jobs:
     outputs:
       artifacts_availability: ${{ steps.status.outputs.ARTIFACTS_AVAILABLE }}
     steps:
-      - name: Cancel previous runs
-        uses: styfle/[email protected]
-        with:
-          access_token: ${{ github.token }}
       - uses: actions/checkout@v2
       - uses: conda-incubator/setup-miniconda@v2
         with: