fix: cibuildwheel@v3.4 (no bare v3 tag exists)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: desty2k

.github/workflows/deploy-pypi.yml

@@ -39,7 +39,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
 
-      - uses: pypa/cibuildwheel@v3
+      - uses: pypa/cibuildwheel@v3.4
         env:
           CIBW_BUILD: "cp310-* cp311-* cp312-* cp313-* cp314-*"
           CIBW_SKIP: "*-musllinux_i686 *-manylinux_i686 *-win32"