Update Rust crate schemars to v0.8.21

Cargo.lock

@@ -1462,9 +1462,9 @@ dependencies = [
 
 [[package]]
 name = "schemars"
-version = "0.8.19"
+version = "0.8.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fc6e7ed6919cb46507fb01ff1654309219f62b4d603822501b0b80d42f6f21ef"
+checksum = "09c024468a378b7e36765cd36702b7a90cc3cba11654f6685c8f233408e89e92"
 dependencies = [
  "dyn-clone",
  "schemars_derive",
@@ -1474,9 +1474,9 @@ dependencies = [
 
 [[package]]
 name = "schemars_derive"
-version = "0.8.19"
+version = "0.8.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "185f2b7aa7e02d418e453790dde16890256bbd2bcd04b7dc5348811052b53f49"
+checksum = "b1eee588578aff73f856ab961cd2f79e36bc45d7ded33a7562adba4667aecc0e"
 dependencies = [
  "proc-macro2",
  "quote",