Update guessing game to rand 0.10

[sengmonkham]

Fix: #4679

Fixes the ch02 guessing game chapter, which was using rand 0.8.5 with APIs that have since been renamed in rand 0.9 and rand 0.10.

What changed

rand API migration:

Old (rand 0.8.5)	New (rand 0.10)
rand = "0.8.5"	rand = "0.10"
use rand::Rng	use rand::RngExt
rand::thread_rng().gen_range(1..=100)	rand::rng().random_range(1..=100)

Files updated:

• listings/ch02-guessing-game-tutorial/*/Cargo.toml — version bump (×8)
• listings/ch02-guessing-game-tutorial/*/Cargo.lock — regenerated, pinning rand v0.10.0 (×8)
• listings/ch02-guessing-game-tutorial/*/src/main.rs — API calls updated (×7)
• src/ch02-00-guessing-game-tutorial.md — prose, version specifiers, and cargo build console output updated
• src/ch07-04-bringing-paths-into-scope-with-the-use-keyword.md — updated rand::thread_rng/Rng references

[marcosnathan]

Thanks for this PR. I started studying Rust and I was stuck at this step

[santhosh-john]

@sengmonkham: Could you please resolve the lint issues so this can be ready for merge? This change is particularly helpful for anyone new to the Rust ecosystem and is using the rust-book as their starting point. The example in the book still reflects an older API, which was updated in the Feb 2021 release.

Aligning the code with the current API will make the learning experience smoother and avoid confusion for beginners. Thanks in advance!

[santhosh-john]

... or just use: let secret_number = rand::random_range(1..=100);

[carols10cents]

This is a duplicate of #4756. Please check existing pull requests before duplicating work.