dbld: Bump python packages to 3.12 in devshell

Signed-off-by: Kovacs, Gergo Ferenc <[email protected]>

Author: kovgeri01

dbld/packages.manifest

@@ -98,9 +98,9 @@ python3-venv			[debian, ubuntu, devshell]
 
 # python 3.10 has issues on Debian Testing
 # Nevertheless we should only downgrade for Light style-check tests, which uses pre-commit
-python3.11                   [devshell]
-python3.11-dev               [devshell]
-python3.11-venv              [devshell]
+python3.12                   [devshell]
+python3.12-dev               [devshell]
+python3.12-venv              [devshell]
 
 # libmongoc and libbson packages on various platforms
 # Because we are using fixed version of libmongoc on Bionic, we need to