Updated some dependencies, got rid of Bitcoin stuff which wasn't in use

crates/oracle-demo/Cargo.toml

@@ -6,12 +6,12 @@ edition = "2021"
 [dependencies]
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
-tokio = { version = "1.35", features = ["full"] }
+tokio = { version = "1.45.1", features = ["full"] }
 async-trait = "0.1"
 anyhow = "1.0"
-rand = "0.8"
+rand = "0.9.1"
 chrono = "0.4"
-colored = "2.0"
+colored = "3.0.0"
 
 [[bin]]
 name = "oracle-demo"

crates/oracle-demo/src/main.rs

@@ -139,12 +139,12 @@ impl OracleNode {
     }
 
     fn submit_price(&self) {
-        let mut rng = rand::thread_rng();
+        let mut rng = rand::rng();
 
         let price = if self.is_byzantine {
             self.base_price * 1.2 // Try to manipulate 20% higher
         } else {
-            self.base_price * (1.0 + rng.gen_range(-0.01..0.01))
+            self.base_price * (1.0 + rng.random_range(-0.01..0.01))
         };
 
         let attestation = PriceAttestation {