Fix non-deterministic Node.js version pinning in test.yml

Co-authored-by: AndreaGriffiths11 <20666190+AndreaGriffiths11@users.noreply.github.com>

Author: Copilot

.github/workflows/test.yml

@@ -17,7 +17,7 @@ jobs:
       - name: Install, Test, and Build 🔧
         uses: actions/setup-node@v2
         with:
-          node-version: '>=18.17.0'
+          node-version: '18.17.0'
 
       - name: Install, Test, and Build 🔧
         run: |