upgrade to nodejs 18 for the build

Author: nicolaskruchten

Diff for: .circleci/config.yml

@@ -264,7 +264,7 @@ jobs:
           name: Create conda environment
           command: |
             conda create -n env --yes python=3.9 conda-build conda-verify
-            conda install -n env -c conda-forge jupyterlab nodejs=12
+            conda install -n env -c conda-forge jupyterlab nodejs=18
             conda init bash
             mkdir output