Fail to compile in nigthly becasue num-bigint

[aplanas]

Describe the bug
ncsport fails to compile in nightly because a change in the compiler that affect num-bigint: rust-num/num-bigint#218

The fix is to update in Cargo.lock the version of num-bigint from v0.4.1 to v0.4.2: cargo update -p num-bigint

diff --git a/Cargo.lock b/Cargo.lock
index 75572af..c10647a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2090,9 +2090,9 @@ dependencies = [
 
 [[package]]
 name = "num-bigint"
-version = "0.4.1"
+version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "76e97c412795abf6c24ba30055a8f20642ea57ca12875220b854cfa501bf1e48"
+checksum = "74e768dff5fb39a41b3bcd30bb25cf989706c90d028d1ad71971987aa309d535"
 dependencies = [
  "autocfg 1.0.1",
  "num-integer",