GHA: build linux-aarch64 wheels on native ARM runners

.github/workflows/python.yml

@@ -10,7 +10,7 @@ jobs:
   manylinux:
     name: py${{ matrix.py }} ${{ matrix.ml }}
 
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.runner || 'ubuntu-latest' }}
     strategy:
       fail-fast: false
       matrix:
@@ -43,6 +43,14 @@ jobs:
         - ml: manylinux_2_28_x86_64
           py: cp314-cp314t
 
+        - ml: manylinux_2_28_aarch64
+          py: cp314-cp314
+          runner: ubuntu-24.04-arm
+
+        - ml: manylinux_2_28_aarch64
+          py: cp314-cp314t
+          runner: ubuntu-24.04-arm
+
     steps:
       - uses: actions/checkout@v6
         with: