[3.7] Fix x86 wheels building (#5235) (#5237)

(cherry picked from commit 61eab8c)

Co-authored-by: Andrew Svetlov <andrew.svetlov@gmail.com>

.github/workflows/ci.yml

@@ -223,6 +223,10 @@ jobs:
       matrix:
         pyver: [3.6, 3.7, 3.8, 3.9]
         os: [macos, windows]
+        arch: [x86, x64]
+        exclude:
+        - os: macos
+          arch: x86
       fail-fast: false
     runs-on: ${{ matrix.os }}-latest
     needs: pre-deploy
@@ -235,6 +239,7 @@ jobs:
       uses: actions/setup-python@v2
       with:
         python-version: ${{ matrix.pyver }}
+        architecture: ${{ matrix.arch }}
     - name: Cythonize
       if: ${{ matrix.no-extensions == '' }}
       run: |

CHANGES/5230.bugfix

@@ -0,0 +1 @@
+Provide x86 Windows wheels.