update spring (#54)

Author: EddeCCC

gradle.properties

@@ -3,8 +3,7 @@ boomerangVersion=1.737.0
 # The OpenTelemetry-Boomerang version to ship with the EUM server
 boomerangOpenTelemetryPluginVersion=0.48.0-2
 
-# Upgrade to Spring 3.* and Java 17
-springBootVersion=3.2.2
+springBootVersion=3.2.3
 snakeYamlVersion=2.2
 
 # Ensure to adapt the netty version (inspectit-ocelot-core/build.gradle) when changing the OpenCensus version