chore: replace 3.8 with 3.12 in pipeline matrix

Author: asmfstatoil

azure-pipelines.yml

@@ -6,14 +6,14 @@ pool:
 
 strategy:
   matrix:
-    Python38:
-      python.version: '3.8'
     Python39:
       python.version: '3.9'
     Python310:
       python.version: '3.10'
     Python311:
       python.version: '3.11'
+    Python312:
+      python.version: '3.12'
 
 steps:
 - task: UsePythonVersion@0