Removed use of immutable and type adapters

Signed-off-by: PatrikBuhr <patrik.buhr@est.tech>
Issue-ID: NONRTRIC-743
Change-Id: I9b99fd0d3447175a1e7f0511c3180f37ec0182c4
diff --git a/pom.xml b/pom.xml
index 0067268..d9fe5b7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -48,7 +48,7 @@
     <properties>
         <java.version>11</java.version>
         <springfox.version>3.0.0</springfox.version>
-        <immutable.version>2.9.0</immutable.version>
+        <gson.version>2.9.0</gson.version>
         <swagger.version>2.1.13</swagger.version>
         <json.version>20211205</json.version>
         <maven-compiler-plugin.version>3.8.0</maven-compiler-plugin.version>
@@ -93,9 +93,9 @@
             <version>${swagger.version}</version>
         </dependency>
         <dependency>
-            <groupId>org.immutables</groupId>
+            <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>${immutable.version}</version>
+            <version>${gson.version}</version>
         </dependency>
         <dependency>
             <groupId>org.json</groupId>