Use non-deprecated exception handling

Pulls in the fix upstream from mhils/backports.socketpair#1

Author: jeffwidman

kafka/vendor/socketpair.py

@@ -48,7 +48,7 @@ def socketpair(family=socket.AF_INET, type=socket.SOCK_STREAM, proto=0):
                             raise
                 csock.setblocking(True)
                 ssock, _ = lsock.accept()
-            except:
+            except Exception:
                 csock.close()
                 raise
         finally: