Update GitHub Actions to current majors

Author: Bobtoshi

.github/workflows/ci.yml

@@ -10,8 +10,8 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
+      - uses: actions/checkout@v6
+      - uses: actions/setup-node@v6
         with:
           node-version: 22
           cache: npm