build: Make Gson an optional compile dependency

Author: thced

pom.xml

@@ -38,6 +38,12 @@
   </dependencyManagement>
 
   <dependencies>
+    <dependency>
+      <groupId>com.google.code.gson</groupId>
+      <artifactId>gson</artifactId>
+      <version>2.14.0</version>
+      <optional>true</optional>
+    </dependency>
     <dependency>
       <groupId>org.yaml</groupId>
       <artifactId>snakeyaml</artifactId>
@@ -57,12 +63,6 @@
       <version>1.5.32</version>
       <scope>test</scope>
     </dependency>
-    <dependency>
-      <groupId>com.google.code.gson</groupId>
-      <artifactId>gson</artifactId>
-      <version>2.14.0</version>
-      <scope>test</scope>
-    </dependency>
     <dependency>
       <groupId>org.assertj</groupId>
       <artifactId>assertj-core</artifactId>