Add Python 3.13 to build matrix in workflows

Author: michaeltryby

.github/workflows/build_wheel.yml

@@ -47,7 +47,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        pyver: [cp39, cp310, cp311, cp312]
+        pyver: [cp39, cp310, cp311, cp312, cp313]
 
     steps:
       - name: Checkout repo
@@ -91,7 +91,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        pyver: [cp38, cp39, cp310, cp311, cp312]
+        pyver: [cp39, cp310, cp311, cp312, cp313]
 
     steps:
       - name: Checkout repo