chore: Remove unused rand dep from vortexor (#9192)

Cargo.lock

@@ -11785,7 +11785,6 @@ dependencies = [
  "percentage",
  "quinn",
  "quinn-proto",
- "rand 0.8.5",
  "rustls 0.23.34",
  "signal-hook",
  "smallvec",

vortexor/Cargo.toml

@@ -42,7 +42,6 @@ pem = { workspace = true }
 percentage = { workspace = true }
 quinn = { workspace = true }
 quinn-proto = { workspace = true }
-rand = { workspace = true }
 rustls = { workspace = true }
 signal-hook = { workspace = true }
 smallvec = { workspace = true }