Update dependencies and refactor random number generation

- Bump versions of several dependencies in Cargo.toml for improved functionality and security, including:
  - socket2 to 0.6
  - nix to 0.31
  - toml to 1.0
  - x509-parser to 0.18
  - dashmap to 6.1
  - rand to 0.10
  - reqwest to 0.13
  - notify to 8.2
  - ipnetwork to 0.21
  - webpki-roots to 1.0
  - criterion to 0.8
- Introduce `OnceLock` for secure random number generation in multiple modules to ensure thread safety and reduce overhead.
- Refactor random number generation calls to use the new `RngExt` trait methods for consistency and clarity.
- Add new PNG files for architectural documentation.

src/crypto/random.rs

@@ -3,7 +3,7 @@
 #![allow(deprecated)]
 #![allow(dead_code)]
 
-use rand::{Rng, RngCore, SeedableRng};
+use rand::{Rng, RngExt, SeedableRng};
 use rand::rngs::StdRng;
 use parking_lot::Mutex;
 use zeroize::Zeroize;
@@ -101,7 +101,7 @@ impl SecureRandom {
             return 0;
         }
         let mut inner = self.inner.lock();
-        inner.rng.gen_range(0..max)
+        inner.rng.random_range(0..max)
     }
     
     /// Generate random bits
@@ -141,7 +141,7 @@ impl SecureRandom {
     pub fn shuffle<T>(&self, slice: &mut [T]) {
         let mut inner = self.inner.lock();
         for i in (1..slice.len()).rev() {
-            let j = inner.rng.gen_range(0..=i);
+            let j = inner.rng.random_range(0..=i);
             slice.swap(i, j);
         }
     }