docs: remove ubuntu 23.10 from contributor docs (#30105)

Ubuntu 23.10 (Mantic Minotaur) reached end-of-life on July 11, 2024

Author: MikeMcC399

CONTRIBUTING.md

@@ -212,7 +212,7 @@ You must have the following installed on your system to contribute locally:
 
 `sudo apt install g++ make` meets the additional requirements to run `node-gyp` in the context of building Cypress from source.
 `python` is pre-installed on Debian-based systems including Ubuntu.
-The Python versions shipped with Ubuntu versions `20.04`, `23.10` and `22.04` are compatible with Cypress requirements.
+The Python versions shipped with Ubuntu versions `20.04` and `22.04` are compatible with Cypress requirements.
 
 Only on Ubuntu `24.04` install Python `3.11` by executing the following commands: