Backport PR matplotlib#30195: ci: Enable wheel builds on Python 3.14'

ci: Enable wheel builds on Python 3.14
(cherry picked from commit c805967)

Author: ianthomas23

.github/workflows/cibuildwheel.yml

@@ -136,15 +136,27 @@ jobs:
           name: cibw-sdist
           path: dist/
 
+      - name: Build wheels for CPython 3.14
+        uses: pypa/cibuildwheel@5f22145df44122af0f5a201f93cf0207171beca7  # v3.0.0
+        with:
+          package-dir: dist/${{ needs.build_sdist.outputs.SDIST_NAME }}
+        env:
+          CIBW_BUILD: "cp314-* cp314t-*"
+          CIBW_ENABLE: "cpython-freethreading cpython-prerelease"
+          CIBW_ARCHS: ${{ matrix.cibw_archs }}
+          CIBW_MANYLINUX_X86_64_IMAGE: manylinux_2_28
+          CIBW_BEFORE_TEST: >-
+            python -m pip install
+            --index-url https://pypi.anaconda.org/scientific-python-nightly-wheels/simple
+            --upgrade --pre --only-binary=:all: contourpy numpy pillow
+
       - name: Build wheels for CPython 3.13
         uses: pypa/cibuildwheel@ee63bf16da6cddfb925f542f2c7b59ad50e93969  # v2.22.0
         with:
           package-dir: dist/${{ needs.build_sdist.outputs.SDIST_NAME }}
         env:
           CIBW_BUILD: "cp313-* cp313t-*"
           CIBW_ENABLE: cpython-freethreading
-          # No free-threading wheels available for aarch64 on Pillow.
-          CIBW_TEST_SKIP: "cp313t-manylinux_aarch64"
           CIBW_ARCHS: ${{ matrix.cibw_archs }}
 
       - name: Build wheels for CPython 3.12
@@ -171,6 +183,14 @@ jobs:
           CIBW_BUILD: "cp310-*"
           CIBW_ARCHS: ${{ matrix.cibw_archs }}
 
+      - name: Build wheels for PyPy
+        uses: pypa/cibuildwheel@5f22145df44122af0f5a201f93cf0207171beca7  # v3.0.0
+        with:
+          package-dir: dist/${{ needs.build_sdist.outputs.SDIST_NAME }}
+        env:
+          CIBW_BUILD: "cp310-*"
+          CIBW_ARCHS: ${{ matrix.cibw_archs }}
+
       - name: Build wheels for PyPy
         uses: pypa/cibuildwheel@ee63bf16da6cddfb925f542f2c7b59ad50e93969  # v2.22.0
         with: