Auto merge of #14127 - lnicola:windows-x86, r=lnicola

feat: Build `i686-pc-windows-msvc` binaries

These have been requested a couple of times, so let's build them.

Author: bors

.github/workflows/release.yaml

@@ -28,6 +28,9 @@ jobs:
           - os: windows-latest
             target: x86_64-pc-windows-msvc
             code-target: win32-x64
+          - os: windows-latest
+            target: i686-pc-windows-msvc
+            code-target: win32-ia32
           - os: windows-latest
             target: aarch64-pc-windows-msvc
             code-target: win32-arm64
@@ -230,6 +233,10 @@ jobs:
         with:
           name: dist-x86_64-pc-windows-msvc
           path: dist
+      - uses: actions/download-artifact@v1
+        with:
+          name: dist-i686-pc-windows-msvc
+          path: dist
       - uses: actions/download-artifact@v1
         with:
           name: dist-aarch64-pc-windows-msvc