[create-pull-request] automated change (#1777)

Author: github-actions[bot]

configure.ac

@@ -25,7 +25,7 @@ AC_PREREQ([2.69])
 
 # Initialize with name, version, and support email address.
 AC_INIT([GFDL FMS Library],
-  [2025.04],
+  [2025.04-dev],
   [[email protected]],
   [FMS],
   [https://www.github.com/NOAA-GFDL/FMS])