Temporarily limit Node versions used in CI to dodge Node bug

nodejs/node#53075 results in crashes in test
suite (not in cases relevant to most users) when using the latest Node
v20 or v22, due to Buffer usage deep in wasm within zstd-codc
subdependencies, which are challenging to resolve.

For now, we just skip testing on the latest versions until this is
resolved.

.github/workflows/ci.yml

@@ -7,7 +7,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [14.x, 16.x, 18.x, 20.x, v20.11.1, 22.x, '*']
+        node-version: [14.x, 16.x, 18.x, 20.14.x, v20.11.1, 22.1.x]
 
     steps:
       - uses: actions/checkout@v4