test: adjust ci config (#5)

test runner features used in this project's tests haven't been backported, so can't test against node v20:

```
--experimental-test-module-mocks
--experimental-test-snapshots
--experimental-strip-types
```

.github/workflows/node.js.yml → .github/workflows/ci.yml

@@ -1,7 +1,7 @@
 # This workflow will do a clean installation of node dependencies, cache/restore them, build the source code and run tests across different versions of node
 # For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-nodejs
 
-name: Node.js CI
+name: CI
 
 on:
   push: