chore(ci): Drop cp39 wheels, add cp314, update osx-x64 runner

Author: effigies

.github/workflows/wheels.yml

@@ -60,15 +60,9 @@ jobs:
         buildplat:
           - [ubuntu-latest, musllinux_x86_64]
           - [ubuntu-latest, manylinux_aarch64]
-          - [macos-13, macosx_x86_64]  # native Intel hardware
+          - [macos-15-intel, macosx_x86_64]  # native Intel hardware
           - [windows-latest, win_amd64]
-        python: ["cp38", "cp39", "cp310", "cp311", "cp312"]
-        # No NumPy wheels on 3.8 aarch64 or musl
-        exclude:
-          - buildplat: [ubuntu-latest, manylinux_aarch64]
-            python: "cp38"
-          - buildplat: [ubuntu-latest, musllinux_x86_64]
-            python: "cp38"
+        python: ["cp310", "cp311", "cp312", "cp313", "cp314"]
         include:
           # Manylinux and arm64 builds (on native hardware) are cheap, do all in one
           - { buildplat: ["ubuntu-latest", "manylinux_x86_64"], python: "*" }