Fix bigdecimal crate surviving minimal versions check

Author: tyranron

juniper/Cargo.toml

@@ -31,7 +31,7 @@ default = [
     "url",
     "uuid",
 ]
-bigdecimal = ["dep:bigdecimal", "dep:ryu"]
+bigdecimal = ["dep:bigdecimal", "dep:num-bigint", "dep:ryu"]
 bson = ["dep:bson"]
 chrono = ["dep:chrono"]
 chrono-clock = ["chrono", "chrono/clock"]
@@ -69,6 +69,8 @@ url = { version = "2.0", optional = true }
 uuid = { version = "1.3", default-features = false, optional = true }
 
 # Fixes for MSRV check.
+# TODO: Try remove on upgrade of `bigdecimal` crate.
+num-bigint = { version = "0.4.2", optional = true }
 # TODO: Try remove on upgrade of `chrono-tz` crate.
 regex = { version = "1.6", features = ["std"], default-features = false, optional = true }
 # TODO: Remove on upgrade to 0.4.1 version of `graphql-parser`.