Sync python-sockets-tutorial with the updated tutorial

[realpython-bot]

Companion sync for the maintenance update of Socket Programming in Python (Guide).

What changed

• python-sockets-tutorial/README.md: the stated requirement moves from Python 3.6 or later to Python 3.14 or later, matching the article's updated dependencies field (python==3.14) and the setup step, which now tells readers to have Python 3.14 or above installed. Python 3.6 reached end of life in December 2021.

No code changes were needed: the eight scripts in the folder still match the article's code blocks verbatim, and the article's only code-side edit this cycle was a REPL socket.getaddrinfo() output block that has no twin in this folder. There is no requirements.txt here — the tutorial is standard-library only, so there is nothing else to pin.

How it was verified

On Python 3.14.6:

• echo-server.py + echo-client.py — client received b'Hello, world'.
• multiconn-server.py + multiconn-client.py (2 connections) — both connections echoed and closed cleanly.
• app-server.py + app-client.py — search morpheus and search ring both returned the expected results.
• uvx ruff@0.14.1 format --check python-sockets-tutorial — 8 files already formatted.
• uvx ruff@0.14.1 check python-sockets-tutorial — all checks passed.

Links

• Draft update clone: https://realpython.com/pbjt/blog/post/2402/change/
• Maintenance card: https://trello.com/c/IAG0Wfg3