Update Rust toolchain to 1.89 (#19807)

crates/ruff_python_semantic/src/imports.rs

@@ -57,7 +57,7 @@ impl NameImport {
     }
 
     /// Returns the [`QualifiedName`] of the imported name (e.g., given `from foo import bar as baz`, returns `["foo", "bar"]`).
-    pub fn qualified_name(&self) -> QualifiedName {
+    pub fn qualified_name(&self) -> QualifiedName<'_> {
         match self {
             NameImport::Import(import) => QualifiedName::user_defined(&import.name.name),
             NameImport::ImportFrom(import_from) => collect_import_from_member(

crates/ruff_python_semantic/src/model.rs

@@ -2100,7 +2100,7 @@ impl<'a> SemanticModel<'a> {
     /// This method searches all scopes created by a function definition, comparing the
     /// [`TextRange`] of the provided `function_def` with the the range of the function
     /// associated with the scope.
-    pub fn function_scope(&self, function_def: &ast::StmtFunctionDef) -> Option<&Scope> {
+    pub fn function_scope(&self, function_def: &ast::StmtFunctionDef) -> Option<&Scope<'_>> {
         self.scopes.iter().find(|scope| {
             let Some(function) = scope.kind.as_function() else {
                 return false;