Update actions.

Author: davidlehn

.github/workflows/main.yml

@@ -10,9 +10,9 @@ jobs:
       matrix:
         node-version: [20.x]
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v3
+      uses: actions/setup-node@v4
       with:
         node-version: ${{ matrix.node-version }}
     - run: npm install
@@ -26,9 +26,9 @@ jobs:
       matrix:
         node-version: [18.x, 20.x]
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v3
+      uses: actions/setup-node@v4
       with:
         node-version: ${{ matrix.node-version }}
     - run: |
@@ -47,9 +47,9 @@ jobs:
       matrix:
         node-version: [20.x]
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v3
+      uses: actions/setup-node@v4
       with:
         node-version: ${{ matrix.node-version }}
     - run: |
@@ -61,7 +61,8 @@ jobs:
         cd test
         npm run coverage-ci
     - name: Upload coverage to Codecov
-      uses: codecov/codecov-action@v3
+      uses: codecov/codecov-action@v4
       with:
         file: ./test/coverage/lcov.info
         fail_ci_if_error: true
+        token: ${{ secrets.CODECOV_TOKEN }}