fix: Do not use + for spaces in encoding (#1062)

Author: kstich

packages/smithy-client/src/extended-encode-uri-component.ts

@@ -5,5 +5,5 @@
 export function extendedEncodeURIComponent(str: string): string {
   return encodeURIComponent(str).replace(/[!'()*]/g, function (c) {
     return "%" + c.charCodeAt(0).toString(16);
-  }).replace(/%20/g, "+");
+  });
 }