Revert serde version changes

Author: gabrielbosio

operator/mina/lib/Cargo.toml

@@ -13,9 +13,9 @@ ark-ff = { version = "0.3.0", features = ["parallel", "asm"] }
 ark-ec = { version = "0.3.0", features = ["parallel"] }
 ark-poly = { version = "0.3.0", features = ["parallel"] }
 ark-serialize = "0.3.0"
-serde = "1.0"
+serde = "1.0.197"
 rmp-serde = "1.1.2"
-serde_json = "1.0"
+serde_json = "1.0.118"
 hex = "0.4.3"
 mina-tree = { git = "https://github.com/lambdaclass/openmina/", branch = "mina_bridge" }
 mina-p2p-messages = { git = "https://github.com/lambdaclass/openmina/", branch = "mina_bridge" }