👷 ci: Verifying that GPR+login works

.github/workflows/test.yml

@@ -17,11 +17,15 @@ jobs:
       - uses: actions/setup-node@v2
         with:
           node-version: 15
-          # registry-url: https://npm.pkg.github.com
-          registry-url: https://registry.npmjs.org
+          # We must indicate the Github Package Registry, as our config packages
+          # are there (and also NPM). Frustratingly, NPM prefers the GPR over
+          # NPM - even when we indicate that we want to pull from NPM instead of
+          # the GPR.
+          registry-url: https://npm.pkg.github.com
 
       - run: npm ci
         env:
+          # Provide a "password" to GPR so that we can pull our packages.
           NODE_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - uses: actions/upload-artifact@v2