R2-3052: Lint step breaks in Github actions

Author: jtoliver-quoin

.github/workflows/app.yml

@@ -88,5 +88,5 @@ jobs:
           cache-dependency-path: '**/package-lock.json'
       - name: Run client linter
         run: |
-          npm ci
+          npm config set legacy-peer-deps true && npm ci
           npm run lint