ci: Try collecting CPython-3.15 DLLs

Author: gaborbernat

.github/workflows/dll.yml

@@ -24,12 +24,14 @@ jobs:
               3.13t
               3.14-dev
               3.14t-dev
+              3.15-dev
+              3.15t-dev
           allow-prereleases: true
       - name: Copy pythonXY.dll
         shell: bash
         run: |
           set -e
-          for VER in 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.13t 3.14 3.14t; do
+          for VER in 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.13t 3.14 3.14t 3.15 3.15t; do
             VER_NUM=$(echo $VER | sed 's/\.//')
             PREFIX=$(py -$VER -c "import sys; print(sys.base_prefix, end='')")
             cp "$PREFIX/python$VER_NUM.dll" .