fix(publish): remove broken --integrity flag from global npm install

The --integrity flag is not supported by npm install -g in npm 10.x
(bundled with Node 20 on GitHub Actions runners). npm was treating the
sha512-... value as a git package specifier, causing a git ls-remote call
and a permission-denied failure.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: ihor-sokoliuk

.github/workflows/npm-publish.yml

@@ -25,7 +25,7 @@ jobs:
 
       - name: Update npm
         # Keep npm pinned: npm publish --provenance relies on modern trusted publishing support.
-        run: npm install -g npm@11.17.0 --integrity sha512-PurxiZexEHDTE4SSaLI3ZrnbAGiZfeyUcQcxcP5D+hfytNAze/D1IzDuInTn9XVLIbAQUnQuSPXJx02LHjLvQw==
+        run: npm install -g npm@11.17.0
 
       - name: Verify npm provenance support
         run: |