Switch to Codecov GitHub Action

The codecov-node uploader is deprecated and just broke permanently. It is
replaced by the GitHub Action.

.github/workflows/test.yml

@@ -27,10 +27,12 @@ jobs:
         uses: actions/setup-node@v3
         with:
           node-version: 20.x
-      - run: npm ci
       - run: npm run codecov:test262
+      - uses: codecov/codecov-action@v4
+        with:
+          files: coverage/test262.lcov
         env:
-          HEAD_SHA: ${{ github.event.pull_request.head.sha }}
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
   test-cookbook:
     runs-on: ubuntu-latest
     steps:

polyfill/ci_codecov_test262.sh

@@ -2,11 +2,6 @@
 
 set -ex
 
-SHA_ARG=""
-if [ -n "$HEAD_SHA" ]; then
-  SHA_ARG="-c $HEAD_SHA"
-fi
-
 npm run build262
 
 export NODE_V8_COVERAGE=coverage/tmp/
@@ -33,8 +28,6 @@ c8 report --reporter=text-lcov --temp-directory=$NODE_V8_COVERAGE \
   --exclude=polyfill/runtest262.mjs \
   --exclude-after-remap > coverage/test262.lcov
 
-codecov $SHA_ARG -f coverage/test262.lcov
-
 rm -rf $NODE_V8_COVERAGE
 
 if [ $failed -ne 0 ]; then

polyfill/package.json

@@ -78,7 +78,6 @@
     "@rollup/plugin-node-resolve": "^15.1.0",
     "@rollup/plugin-replace": "^5.0.2",
     "c8": "^7.14.0",
-    "codecov": "^3.8.3",
     "rollup": "^3.23.1",
     "rollup-plugin-node-polyfills": "^0.2.1"
   },