Bump version of node to 20

Author: mmisiorek

.github/workflows/ci-tests.yaml

@@ -14,7 +14,7 @@ jobs:
 
       - uses: actions/setup-node@master
         with:
-          node-version: ${{ env.NODE_VERSION }}
+          node-version: 20
           registry-url: 'https://npm.pkg.github.com'
           scope: "@rumblefishdev"