Reduce test targets for CI efficiency

Author: johngian

.github/workflows/nodejs.yml

@@ -17,9 +17,9 @@ jobs:
       fail-fast: false
       max-parallel: 2
       matrix:
-        node-version: [10.x, 12.x, 14.x, 16.x]
+        node-version: [14.x]
         cassandra-version: [3.11.4]
-        test-target: [sqlite, cassandra]
+        test-target: [cassandra]
         test-mode: [fs]
         # test-mode: [fs, fefs, febe] - fefs and febe are not used in prod and likely never will be