PXB does not compile on Gcc-11

/work/pxb/src/8.0/storage/innobase/xtrabackup/src/keyring_plugins.cc: In function ‘bool xb_tablespace_keys_dump(ds_ctxt_t*, const char*, size_t)’:
/work/pxb/src/8.0/storage/innobase/xtrabackup/src/keyring_plugins.cc:761:19: error: loop variable ‘entry’ creates a copy from type ‘const std::pair<const long unsigned int, tablespace_encryption_info>’ [-Werror=range-loop-construct]
  761 |   for (const auto entry : encryption_info) {
      |                   ^~~~~
/work/pxb/src/8.0/storage/innobase/xtrabackup/src/keyring_plugins.cc:761:19: note: use reference type to prevent copying
  761 |   for (const auto entry : encryption_info) {
      |                   ^~~~~
      |                   &