Update Rust crate quick-xml to 0.31.0

Author: renovate[bot]

Cargo.lock

@@ -18,7 +18,7 @@ xcsoar = ["encoding_rs"]
 [dependencies]
 encoding_rs = { version = "0.8.34", optional = true }
 minidom = { version = "0.12.0", optional = true }
-quick-xml = { version = "0.30.0", optional = true }
+quick-xml = { version = "0.31.0", optional = true }
 thiserror = "1.0.59"
 
 [dev-dependencies]