update rust-version to 1.65

Author: yangweijian

Cargo.toml

@@ -3,7 +3,7 @@ name = "haizhi-rocksdb"
 description = "Rust wrapper for Facebook's RocksDB embeddable database"
 version = "0.2.8"
 edition = "2018"
-rust-version = "1.60"
+rust-version = "1.65"
 authors = ["Tyler Neely <[email protected]>", "David Greenberg <[email protected]>"]
 repository = "https://github.com/haizhi-tech/haizhi-rust-rocksdb/"
 license = "Apache-2.0"
@@ -48,4 +48,4 @@ bincode = "1.3"
 serde = { version = "1", features = [ "derive" ] }
 
 [lib]
-doctest = false
+doctest = false