upgrade candid to 0.10.12

Author: lwshang

Cargo.toml

@@ -33,7 +33,7 @@ ic0 = { path = "ic0", version = "0.24.0-alpha.1" }
 ic-cdk = { path = "ic-cdk", version = "0.18.0-alpha.1" }
 ic-cdk-timers = { path = "ic-cdk-timers", version = "0.12.0-alpha.1" }
 
-candid = "0.10.4"
+candid = "0.10.12"
 candid_parser = "0.1.4"
 futures = "0.3"
 hex = "0.4"
@@ -43,6 +43,3 @@ serde_bytes = "0.11"
 sha2 = "0.10"
 slotmap = "1"
 syn = "2"
-
-[patch.crates-io]
-candid = { git = "https://github.com/dfinity/candid", branch = "lwshang/PhantomData_CandidType" }