Upgraded Rust compiler version

[georgemakrakis-nhlstenden]

I have updated the version for the Rust compiler so the issues with the websockets described in issue #2 can be resolved.

Tested that the build and run of MaCySTE works on an Ubuntu 24.04.1 LTS Desktop, with make check reporting the following:

make -C src check
make[1]: Entering directory '/home/george/MaCySTe/src'
Found command cat
Found command envsubst
Found command flatpak-builder
Found command flatpak
Found command ip
Found command podman
Found command python3
Found command sysctl
Found command tee
Found command xdg-open
Podman version 4.9.3 is ok
Python version 3.12.3 (main, Nov  6 2024, 18:32:19) [GCC 13.2.0] is ok
make[1]: Leaving directory '/home/george/MaCySTe/src'