Update node version for tests

Signed-off-by: Steve Cassidy <steve.cassidy@mq.edu.au>

.github/workflows/unit_tests_linting_and_basic_building.yml

@@ -16,7 +16,7 @@ jobs:
     - name: Use Node.js lts/*
       uses: actions/setup-node@v2
       with:
-        node-version: '16'
+        node-version: '18'
         cache: 'npm'
     - name: "Linting and testing"
       run: |