Migrate from derive_more to thiserror

crates/dav/Cargo.toml

@@ -7,7 +7,6 @@ edition = "2021"
 actix-web = "4.9"
 anyhow = "1.0"
 async-trait = "0.1"
-derive_more = "1.0"
 futures-util = "0.3"
 quick-xml = { version = "0.36", features = [
   "serde",

crates/dav/src/depth_extractor.rs

@@ -1,8 +1,9 @@
 use actix_web::{http::StatusCode, FromRequest, HttpRequest, ResponseError};
-use derive_more::Display;
 use futures_util::future::{err, ok, Ready};
+use thiserror::Error;
 
-#[derive(Debug, Display)]
+#[derive(Error, Debug)]
+#[error("Invalid Depth header")]
 pub struct InvalidDepthHeader {}
 
 impl ResponseError for InvalidDepthHeader {