ci(node16): manually install node16 and test

Author: texastony

codebuild/nodejs16.yml

@@ -12,7 +12,7 @@ phases:
       - mkdir $NVM_DIR
       - curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.0/install.sh | bash
       - chmod +x "$NVM_DIR/nvm.sh"
-      - \. "$NVM_DIR/nvm.sh"
+      - . "$NVM_DIR/nvm.sh"
       - command -v nvm
       - nvm install 16
       - nvm alias default 16