ci: Configure npm registry without _authToken for trusted publishing

setup-node's registry-url option writes an _authToken=${NODE_AUTH_TOKEN}
line into .npmrc. Without NODE_AUTH_TOKEN set, this resolves to an empty
token that takes precedence over OIDC auth, causing a 404 on publish.
Use npm config set instead to configure the registry without injecting
the auth token line, allowing npm --provenance to use OIDC directly.

Author: lutter

.github/workflows/gnd-binary-build.yml

@@ -208,6 +208,9 @@ jobs:
         with:
           node-version: 22
 
+      - name: Configure npm registry
+        run: npm config set registry https://registry.npmjs.org/
+
       - name: Download gnd binary
         env:
           GH_TOKEN: ${{ github.token }}
@@ -281,6 +284,9 @@ jobs:
         with:
           node-version: 22
 
+      - name: Configure npm registry
+        run: npm config set registry https://registry.npmjs.org/
+
       - name: Create wrapper package
         shell: bash
         run: |