chore!: update bignum dependency to version 0.8.2 (#95)

Author: TomAFrench

Nargo.toml

@@ -5,6 +5,6 @@ authors = [""]
 compiler_version = ">=1.0.0"
 
 [dependencies]
-bignum = { tag = "v0.8.0", git = "https://github.com/noir-lang/noir-bignum" }
+bignum = { git = "https://github.com/noir-lang/noir-bignum", tag = "v0.8.2" }
 poseidon = { git = "https://github.com/noir-lang/poseidon", tag = "v0.1.1" }
-    
+