chore: remove last instance of setup-node-nvm

It looks like we missed this when removing every other instance of
setup-node-nvm in AssemblyScript#2779.

Author: CountBleck

.github/workflows/test.yml

@@ -132,7 +132,7 @@ jobs:
     needs: check
     steps:
     - uses: actions/checkout@v3
-    - uses: dcodeIO/setup-node-nvm@master
+    - uses: actions/setup-node@v3
       with:
         node-version: current
     - name: Install dependencies