Bump microsphere-java to 0.2.8

Update microsphere-java.version in microsphere-spring-parent/pom.xml from 0.2.7 to 0.2.8 to pick up the latest microsphere-java release.

Author: mercyblitz

microsphere-spring-parent/pom.xml

@@ -19,7 +19,7 @@
     <description>Microsphere Spring Parent</description>
 
     <properties>
-        <microsphere-java.version>0.2.7</microsphere-java.version>
+        <microsphere-java.version>0.2.8</microsphere-java.version>
         <microsphere-logging.version>0.1.6</microsphere-logging.version>
         <jakartaee.version>11.0.0</jakartaee.version>
         <jackson.version>2.21.2</jackson.version>