Bump parent version to 0.2.7

Update the parent POM reference for io.github.microsphere-projects:microsphere-build from 0.2.6 to 0.2.7 in pom.xml to pick up the latest build/configuration changes.

Author: mercyblitz

pom.xml

@@ -6,7 +6,7 @@
     <parent>
         <groupId>io.github.microsphere-projects</groupId>
         <artifactId>microsphere-build</artifactId>
-        <version>0.2.6</version>
+        <version>0.2.7</version>
     </parent>
 
     <groupId>io.github.microsphere-projects</groupId>