add Python 3.13 to build matrix and drop 3.9 (#181)

* add Python 3.13 to build matrix and drop 3.9

* adjust matrix

* adjust matrix 2

Author: hobu

.github/workflows/build.yml

@@ -24,11 +24,13 @@ jobs:
       fail-fast: true
       matrix:
         os: ['ubuntu-latest', 'macos-latest', 'windows-latest']
-        python-version: ['3.9', '3.10', '3.11', '3.12']
-        numpy-version: ['1.24', '2.0']
+        python-version: ['3.10', '3.11', '3.12', '3.13']
+        numpy-version: ['1.24', '2.1']
         exclude:
           - python-version: '3.12'
             numpy-version: '1.24'
+          - python-version: '3.13'
+            numpy-version: '1.24'
 
     steps:
     - name: Check out python-pdal