Update tested python versions

Author: benfred

.github/workflows/build.yml

@@ -199,11 +199,11 @@ jobs:
             3.8.0,
             3.8.18,
             3.9.0,
-            3.9.20,
+            3.9.21,
             3.10.0,
-            3.10.15,
+            3.10.16,
             3.11.0,
-            3.11.10,
+            3.11.11,
             3.12.0,
             3.12.1,
             3.12.2,
@@ -212,7 +212,11 @@ jobs:
             3.12.5,
             3.12.6,
             3.12.7,
+            3.12.8,
+            3.12.9,
             3.13.0,
+            3.13.1,
+            3.13.2,
           ]
         # TODO: also test windows
         os: [ubuntu-20.04, macos-13, windows-latest]
@@ -225,13 +229,13 @@ jobs:
           - os: windows-latest
             python-version: 3.8.18
           - os: windows-latest
-            python-version: 3.9.20
+            python-version: 3.9.21
           - os: windows-latest
-            python-version: 3.10.15
+            python-version: 3.10.16
           - os: macos-13
-            python-version: 3.11.10
+            python-version: 3.11.11
           - os: windows-latest
-            python-version: 3.11.10
+            python-version: 3.11.11
           - os: macos-13
             python-version: 3.12.0
           - os: windows-latest
@@ -264,6 +268,14 @@ jobs:
             python-version: 3.12.7
           - os: windows-latest
             python-version: 3.12.7
+          - os: macos-13
+            python-version: 3.12.8
+          - os: windows-latest
+            python-version: 3.12.8
+          - os: macos-13
+            python-version: 3.12.9
+          - os: windows-latest
+            python-version: 3.12.9
 
     steps:
       - uses: actions/checkout@v2