Update tests to node 16, 18 and 20

Signed-off-by: Axel Boberg <[email protected]>

.github/workflows/test.yml

@@ -12,7 +12,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [14.x, 15.x, 16.x]
+        node-version: [16.x, 18.x, 20.x]
 
     steps:
       - uses: actions/checkout@v2