Upload code coverage reports using the Codecov GitHub Action (#1937)

.github/workflows/ci-build.yml

@@ -29,4 +29,10 @@ jobs:
       run: ./node_modules/.bin/eslint -v
     - run: npm run build
     - run: npm test
-    - run: npm run coverage
+    - name: Upload coverage to Codecov
+      if: matrix.node-version == '20.x'
+      uses: codecov/codecov-action@v3
+      with:
+        directory: coverage
+        fail_ci_if_error: true
+        verbose: true

package.json

@@ -32,7 +32,6 @@
     "mocha": "TS_NODE_PROJECT=tsconfig.json nyc mocha --config .mocharc.json \"src/**/*.spec.ts\"",
     "test": "npm run lint && npm run mocha && npm run test:types",
     "test:types": "tsd",
-    "coverage": "codecov",
     "watch": "npx nodemon --watch 'src' --ext 'ts' --exec npm run build"
   },
   "repository": "slackapi/bolt",
@@ -65,7 +64,6 @@
     "@typescript-eslint/eslint-plugin": "^4.4.1",
     "@typescript-eslint/parser": "^4.4.0",
     "chai": "^4.2.0",
-    "codecov": "^3.2.0",
     "eslint": "^7.26.0",
     "eslint-config-airbnb-base": "^14.2.1",
     "eslint-config-airbnb-typescript": "^12.3.1",