update dep and upgrdate self to v0.3.0

Author: rainliu

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "rtcp"
-version = "0.2.4"
+version = "0.3.0"
 authors = ["Rain Liu <[email protected]>", "Michael Uti <[email protected]>"]
 edition = "2018"
 description = "A pure Rust implementation of RTCP"
@@ -12,7 +12,7 @@ repository = "https://github.com/webrtc-rs/rtcp"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-util = { package = "webrtc-util", version = "0.2.4", default-features = false, features = ["marshal"] }
+util = { package = "webrtc-util", version = "0.3.0", default-features = false, features = ["marshal"] }
 bytes = "1"
 thiserror = "1.0.25"
 anyhow = "1.0.41"