fix: presigned custom header order (durch#309)

s3/src/bucket.rs

@@ -2884,7 +2884,7 @@ mod test {
             .presign_put(s3_path, 86400, Some(custom_headers))
             .unwrap();
 
-        assert!(url.contains("host%3Bcustom_header"));
+        assert!(url.contains("custom_header%3Bhost"));
         assert!(url.contains("/test/test.file"))
     }
 

s3/src/signing.rs

@@ -221,6 +221,7 @@ pub fn authorization_query_params_no_sig(
         }
     }
 
+    signed_headers.sort();
     let signed_headers = signed_headers.join(";");
     let signed_headers = utf8_percent_encode(&signed_headers, FRAGMENT_SLASH);