chore: concrete versions

Author: uetchy

.github/workflows/test.yml

@@ -10,7 +10,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest]
-        node: ['lts/*', 'current']
+        node: [14, 18]
     steps:
       - name: Checkout
         uses: actions/checkout@v3