Update to adopt OIDC flow

Author: karreiro

.github/workflows/release.yml

@@ -68,7 +68,7 @@ jobs:
           version: yarn release
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
+          NPM_TOKEN: '' # Empty string forces OIDC
           NPM_CONFIG_PROVENANCE: true
 
       - name: VS Code Marketplace publish