Update docker image to jammy

Author: martin4861

Dockerfile

@@ -11,7 +11,7 @@
 # This describes an image that should be able to generate libsbp bindings.
 # See the README.md for instructions on how to use it.
 
-ARG UBUNTU_RELEASE=focal
+ARG UBUNTU_RELEASE=jammy
 
 FROM ubuntu:${UBUNTU_RELEASE}