refactor(daedalus_client): replace serde-xml-rs with quick-xml (#7185)

quick-xml is already the de facto XML (de)serializer used
elsewhere in the workspace (labrinth, app-lib), so consolidate
on it here too. Its serde feature deserializes the existing
maven-metadata.xml structs without any changes. Drops one
redundant dependency from the workspace.

apps/daedalus_client/Cargo.toml

@@ -20,6 +20,7 @@ dotenvy = { workspace = true }
 futures = { workspace = true }
 indexmap = { workspace = true, features = ["serde"] }
 itertools = { workspace = true }
+quick-xml = { workspace = true }
 reqwest = { workspace = true, features = [
   "json",
   "rustls-tls-native-roots",
@@ -28,7 +29,6 @@ reqwest = { workspace = true, features = [
 rust-s3 = { workspace = true }
 serde = { workspace = true, features = ["derive"] }
 serde_json = { workspace = true }
-serde-xml-rs = { workspace = true }
 sha1_smol = { workspace = true }
 thiserror = { workspace = true }
 tokio = { workspace = true, features = ["macros", "rt-multi-thread", "sync"] }