Bump bpr python version to 3.12

Author: inducer

pyproject.toml

@@ -152,7 +152,7 @@ reportUnusedFunction = "none"
 # we care about at this moment.
 # https://github.com/microsoft/pyright/issues/746
 reportImportCycles = "none"
-pythonVersion = "3.10"
+pythonVersion = "3.12"
 pythonPlatform = "All"
 
 reportImplicitOverride = "hint"