ci: Bump Actions to V4

Author: techman83

.github/workflows/test.yml

@@ -5,15 +5,15 @@ jobs:
   build: # make sure build/ci work properly
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - run: |
           npm install
       - run: |
           npm run all
   test: # make sure the action works on a clean machine without building
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ./
         with:
           token: ${{ secrets.GITHUB_TOKEN }}