fix: Add job to test no deps

.github/workflows/main.yml

@@ -1,6 +1,27 @@
 name: Workflow for Codecov Action
 on: [push, pull_request]
 jobs:
+  no-deps:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [macos-latest, windows-latest, ubuntu-latest]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Upload coverage to Codecov (script)
+        uses: ./
+        with:
+          files: ./coverage/script/coverage-final.json
+          flags: script,${{ matrix.os }}
+          name: codecov-script
+      - name: Upload coverage to Codecov (demo)
+        uses: ./
+        with:
+          files: ./coverage/calculator/coverage-final.json,./coverage/coverage-test/coverage-final.json
+          file: ./coverage/coverage-final.json
+          flags: demo,${{ matrix.os }}
+          name: codecov-demo
   run:
     runs-on: ${{ matrix.os }}
     strategy: