fix(ci): codecov throttled on GHA

Problem:

    [2024-07-12T13:58:12.874Z] ['info'] -> No token specified or token is empty
    ...
    [2024-07-12T13:58:13.715Z] ['verbose'] Passed token was 0 characters long
    [2024-07-12T13:58:13.952Z] ['verbose'] The error stack is: Error:
    Error uploading to https://codecov.io: Error: There was an error
    fetching the storage URL during POST: 429 - {'detail':
    ErrorDetail(string='Rate limit reached. Please upload with the
    Codecov repository upload token to resolve issue. Expected time to
    availability: 1752s.', code='throttled')}

Solution:
- Update codecov GHA runner.
- Set "token" field of the codecov GHA runner.

.github/workflows/node.js.yml

@@ -36,24 +36,24 @@ jobs:
               env:
                   # Unset NODE_OPTIONS because of https://github.com/codecov/uploader/issues/475
                   NODE_OPTIONS: ''
-                  CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
               if: ${{ github.repository == 'aws/aws-toolkit-vscode' && ( github.ref == 'master' || github.event_name == 'pull_request' ) }}
-              uses: codecov/codecov-action@v3
+              uses: codecov/codecov-action@v4
               with:
+                  flags: macos-unittests
                   verbose: true
                   file: ./coverage/lcov.info
-                  flags: macos-unittests
+                  token: ${{ secrets.CODECOV_TOKEN }}
             - name: Code coverage (CodeWhisperer)
               env:
                   # Unset NODE_OPTIONS because of https://github.com/codecov/uploader/issues/475
                   NODE_OPTIONS: ''
-                  CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
               if: ${{ github.repository == 'aws/aws-toolkit-vscode' && ( github.ref == 'master' || github.event_name == 'pull_request' ) }}
-              uses: codecov/codecov-action@v3
+              uses: codecov/codecov-action@v4
               with:
+                  flags: codewhisperer
                   verbose: true
                   file: ./coverage/lcov.info
-                  flags: codewhisperer
+                  token: ${{ secrets.CODECOV_TOKEN }}
 
     web:
         name: test Web
@@ -102,13 +102,13 @@ jobs:
               env:
                   # Unset NODE_OPTIONS because of https://github.com/codecov/uploader/issues/475
                   NODE_OPTIONS: ''
-                  CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
               if: ${{ github.repository == 'aws/aws-toolkit-vscode' && ( github.ref == 'master' || github.event_name == 'pull_request' ) }}
-              uses: codecov/codecov-action@v3
+              uses: codecov/codecov-action@v4
               with:
+                  flags: windows-unittests
                   verbose: true
                   file: ./coverage/lcov.info
-                  flags: windows-unittests
+                  token: ${{ secrets.CODECOV_TOKEN }}
 
     lint:
         name: Lint