chore: mapped Node 21 to browserstack testing

Author: cure53

.github/workflows/build-and-test.yml

@@ -38,7 +38,7 @@ jobs:
         with:
           run: npm run test:ci
         env:
-          TEST_BROWSERSTACK: ${{ startsWith(matrix.node-version, '19') }}
+          TEST_BROWSERSTACK: ${{ startsWith(matrix.node-version, '21') }}
           TEST_PROBE_ONLY: ${{ github.ref != 'refs/heads/main' }}
           BS_USERNAME: ${{ secrets.BS_USERNAME }}
           BS_ACCESSKEY: ${{ secrets.BS_ACCESSKEY }}