Use upstream cibuildwheel main for pyodide wheel builds

pypa/cibuildwheel#2812 was merged, so we no longer need the fork pin.
Switch to pypa/cibuildwheel@main until the changes ship in a tagged
release (latest is v3.4.1, which predates the merge).

Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>

Author: greateggsgreg

.github/workflows/wheel-builder.yml

@@ -415,9 +415,9 @@ jobs:
           name: cryptography-sdist
 
       # TODO: switch to released cibuildwheel once pypa/cibuildwheel#2812
-      # (which adds cp314-pyodide_wasm32 / pyemscripten_2026_0_wasm32) is
-      # merged.
-      - run: pip install "cibuildwheel @ git+https://github.com/agriyakhetarpal/cibuildwheel.git@40ffec086b3068e0e4e2b86e9ef5ff6ff1156d9f"
+      # (which adds cp314-pyodide_wasm32 / pyemscripten_2026_0_wasm32) ships
+      # in a tagged release.
+      - run: pip install "cibuildwheel @ git+https://github.com/pypa/cibuildwheel.git@main"
       - run: mkdir wheelhouse
 
       - name: Cache cross-compiled OpenSSL