[actions] update codecov uploader

Author: ljharb

Diff for: .github/workflows/node-4+.yml

@@ -30,7 +30,7 @@ jobs:
         with:
           node-version: ${{ matrix.node-version }}
       - run: npm run tests-only
-      - uses: codecov/codecov-action@v1
+      - uses: codecov/codecov-action@v2
 
   minors:
     needs: [matrix, latest]
@@ -50,7 +50,7 @@ jobs:
         with:
           node-version: ${{ matrix.node-version }}
       - run: npm run tests-only
-      - uses: codecov/codecov-action@v1
+      - uses: codecov/codecov-action@v2
 
   node:
     name: 'node 4+'

Diff for: .github/workflows/node-iojs.yml

@@ -36,7 +36,7 @@ jobs:
           node-version: ${{ matrix.node-version }}
           skip-ls-check: true
       - run: npm run ${{ matrix.command }}
-      - uses: codecov/codecov-action@v1
+      - uses: codecov/codecov-action@v2
 
   minors:
     needs: [matrix, latest]
@@ -61,7 +61,7 @@ jobs:
           node-version: ${{ matrix.node-version }}
           skip-ls-check: true
       - run: npm run ${{ matrix.command }}
-      - uses: codecov/codecov-action@v1
+      - uses: codecov/codecov-action@v2
 
   node:
     name: 'io.js'

Diff for: .github/workflows/node-zero.yml

@@ -37,7 +37,7 @@ jobs:
           cache-node-modules-key: node_modules-${{ github.workflow }}-${{ github.action }}-${{ github.run_id }}
           skip-ls-check: true
       - run: npm run ${{ matrix.command }}
-      - uses: codecov/codecov-action@v1
+      - uses: codecov/codecov-action@v2
 
   unstable:
     needs: [matrix, stable]
@@ -63,7 +63,7 @@ jobs:
           cache-node-modules-key: node_modules-${{ github.workflow }}-${{ github.action }}-${{ github.run_id }}
           skip-ls-check: true
       - run: npm run ${{ matrix.command }}
-      - uses: codecov/codecov-action@v1
+      - uses: codecov/codecov-action@v2
 
   node:
     name: 'node 0.x'