Azure static web app using node 16 when node 18 was specified

**Describe the bug**

A clear and concise description of what the bug is.

**To Reproduce**
Create azure static web app and update to staticwebapp.config.json to use node 18

**Expected behavior**
Trying to use node 18 in Azure static web app. Selected node 18 package.json engines and in config file. App is built using node 16 causing problems as I have a dependency on node 18

**Screenshots**
Specified node 18 in staticwebapp.config.json

Specified node 18 in package.json

Specified node 18 in ci.yaml

Oryx is using node 16

**Device info (if applicable):**
- OS: [e.g. iOS]
- Browser [e.g. chrome, safari]
- Version [e.g. 22]

**Additional context**
Add any other context about the problem here.