Merge pull request #5339 from cylc/prepare-8.1.1

Prepare release: 8.1.1

Author: oliver-sanders

CHANGES.md

@@ -11,7 +11,7 @@ updated. Only the first match gets replaced, so it's fine to leave the old
 ones in. -->
 
 -------------------------------------------------------------------------------
-## __cylc-8.1.1 (<span actions:bind='release-date'>Coming Soon</span>)__
+## __cylc-8.1.1 (<span actions:bind='release-date'>Released 2023-01-31</span>)__
 
 ### Fixes
 

cylc/flow/__init__.py

@@ -46,7 +46,7 @@ def environ_init():
 
 environ_init()
 
-__version__ = '8.1.1.dev'
+__version__ = '8.1.1'
 
 
 def iter_entry_points(entry_point_name):