apply clippy fixes

Author: anonrig

src/lib.rs

@@ -718,7 +718,7 @@ impl<'de> serde::Deserialize<'de> for Url {
 
         struct UrlVisitor;
 
-        impl<'de> Visitor<'de> for UrlVisitor {
+        impl Visitor<'_> for UrlVisitor {
             type Value = Url;
 
             fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {