aemfvp-rme: updates for 23'q4 release

The version of various components of the stack are updated in this
release. The corresponding changes in the scripts include -

- Ubuntu 20.04 to Ubuntu 22.04
- installing libstdc++6 needed for build.
- installing gcc version 12.3.rel1
- installing e2fsck 1.47.0
- installing required python packages.
- updated install-gcc to locate new web link.

Signed-off-by: Nitin Sharma <nitin.sharma3@arm.com>