update CI

Author: neutrinoceros

.github/workflows/cibuildwheel.yml

@@ -78,11 +78,12 @@ jobs:
       shell: bash
       # On PRs we run only oldest and newest Python versions to reduce CI load.
       # Skips pypy and musllinux everywhere.
-      # We are buiding 39 and 314 for now.
+      # We are buiding 39, 311 and 314 for now.
+      # (3.11 is the oldest version for which we support abi3 wheels)
       # These needs to rotate every new Python release.
       run: |
-        echo "Setting CIBW_BUILD='cp39-* cp314-*'"
-        echo "CIBW_BUILD=cp39-* cp314-*" >> $GITHUB_ENV
+        echo "Setting CIBW_BUILD='cp39-* cp311-* cp314-*'"
+        echo "CIBW_BUILD=cp39-* cp311-* cp314-*" >> $GITHUB_ENV
       if: ${{ github.event_name }}" == "pull_request"
 
     - name: "Building ${{ matrix.os }} (${{ matrix.arch }}) wheels"