⬆️ raise required node version for GH workflow

Author: fluffynuts

.github/workflows/run-all-tests.yml

@@ -13,7 +13,7 @@ jobs:
     - uses: actions/checkout@v2
     - uses: actions/setup-node@v2-beta
       with:
-        node-version: '12'
+        node-version: '16'
     - name: Build and test
       run: |
         npm ci