The source patch use_new_lock.patch import python module
oslo_concurrency, so add python3-oslo.concurrency to Depends.

Yue Tao <yue.tao@windriver.com>

--- a/debian/control
+++ b/debian/control
@@ -24,6 +24,7 @@ Package: python3-keyrings.alt
 Architecture: all
 Depends: python3-keyring,
          python3-pycryptodome,
+         python3-oslo.concurrency,
          ${misc:Depends},
          ${python3:Depends}
 Description: alternate backend implementations for python3-keyring