Upgrade to Spring Framework 6.0.23

Closes gh-1815

Author: rstoyanchev

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
             toolchain: false
         spring:
           - generation: 6.1.x
-            version: 6.0.13
+            version: 6.0.23
           - generation: 6.2.x
             version: 6.2.0-SNAPSHOT
     steps:

gradle.properties

@@ -1,4 +1,4 @@
 version=3.0.1-SNAPSHOT
 org.gradle.caching=true
 
-springFrameworkVersion=6.0.7
+springFrameworkVersion=6.0.23

src/dist/readme.txt

@@ -20,7 +20,7 @@ It is a powerful controller engine that addresses the "C" in MVC.
 
 2. RELEASE NOTES
 ----------------
-Spring Web Flow 3.0 requires JDK 17 and Spring Framework 6.0 to run.
+Spring Web Flow 3.0 requires JDK 17 and Spring Framework 6.0.x as a baseline.
 
 Release distribution contents: