Merge pull request #6972 from wxtim/deps.protobuf

Update protobuf version pin

Author: wxtim

setup.cfg

@@ -67,7 +67,7 @@ install_requires =
     metomi-isodatetime>=1!3.0.0,<1!3.2.0
     # Constrain protobuf version for compatible Scheduler-UIS comms across hosts
     packaging
-    protobuf>=4.24.4,<4.25.0
+    protobuf>=5,<8
     psutil>=5.6.0
     pyzmq>=22
     # NOTE: exclude two urwid versions that were not compatible with Tui