Use codecov action for coverage (#4046)

.github/workflows/tests.yml

@@ -25,15 +25,16 @@ jobs:
         run: npm run ci:coverage
         env:
           CI: true
+      - uses: codecov/codecov-action@v1
+        with:
+          commit_parent: ${{ github.event.pull_request.head.sha }}
 
   linux12:
     runs-on: ubuntu-latest
     name: Node 12 + Extra Tests (Linux)
     steps:
       - name: Checkout Commit
         uses: actions/checkout@v2
-        with:
-          ref: ${{ github.event.pull_request.head.sha }}
       - name: Setup Node
         uses: actions/setup-node@v2
         with:
@@ -55,8 +56,6 @@ jobs:
     steps:
       - name: Checkout Commit
         uses: actions/checkout@v2
-        with:
-          ref: ${{ github.event.pull_request.head.sha }}
       - name: Setup Node
         uses: actions/setup-node@v2
         with:
@@ -79,8 +78,6 @@ jobs:
         run: git config --global core.autocrlf false
       - name: Checkout Commit
         uses: actions/checkout@v2
-        with:
-          ref: ${{ github.event.pull_request.head.sha }}
       - name: Setup Node
         uses: actions/setup-node@v2
         with:

package.json

@@ -15,7 +15,7 @@
     "ci:lint": "npm run lint:nofix",
     "ci:test": "npm run build:cjs && npm run build:bootstrap && npm run test:all",
     "ci:test:only": "npm run build:cjs && npm run build:bootstrap && npm run test:only",
-    "ci:coverage": "npm run build:cjs && nyc --reporter lcovonly mocha && codecov",
+    "ci:coverage": "npm run build:cjs && nyc --reporter lcovonly mocha",
     "lint": "npm run lint:ts -- --fix && npm run lint:js -- --fix && npm run lint:markdown",
     "lint:nofix": "npm run lint:ts && npm run lint:js && npm run lint:markdown",
     "lint:ts": "tslint --project .",
@@ -79,7 +79,6 @@
     "acorn-walk": "^8.0.2",
     "buble": "^0.20.0",
     "chokidar": "^3.5.1",
-    "codecov": "^3.8.1",
     "colorette": "^1.2.1",
     "core-js": "^3.8.3",
     "date-time": "^3.1.0",