Revert "Bumps gson version in order to work with Spingboot 3.4 (#799)"

This reverts commit 5bf24b5.

Author: ahmedmuhsin

pom.xml

@@ -94,7 +94,7 @@
     <dependency>
       <groupId>com.google.code.gson</groupId>
       <artifactId>gson</artifactId>
-      <version>2.11.0</version>
+      <version>2.9.0</version>
     </dependency>
     <dependency>
       <groupId>org.apache.commons</groupId>