poem-openapi: fix lifetime of UrlQuery::get_all

Cargo.toml

@@ -1,4 +1,5 @@
 [workspace]
+resolver = "2"
 members = [
     "poem-derive",
     "poem",

poem-openapi/src/base.rs

@@ -43,15 +43,15 @@ impl Deref for UrlQuery {
 
 impl UrlQuery {
     /// Returns all values with the specified name.
-    pub fn get_all<'a>(&'a self, name: &'a str) -> impl Iterator<Item = &'a String> + 'a {
+    pub fn get_all<'a, 'b: 'a>(&'b self, name: &'a str) -> impl Iterator<Item = &'b String> + 'a {
         self.0
             .iter()
             .filter(move |(n, _)| n == name)
             .map(|(_, value)| value)
     }
 
     /// Returns the first value with the specified name.
-    pub fn get(&self, name: &str) -> Option<&String> {
+    pub fn get(&self, name: &str) -> Option<&str> {
         self.get_all(name).next()
     }
 }