chore: add node 20 and 22 to test matrix (#156)

Author: shadowspawn

.github/workflows/ci.yaml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node: [14, 16, 18]
+        node: [14, 16, 18, 20, 22]
     steps:
       - uses: actions/checkout@v1
       - uses: actions/setup-node@v1