compensate for lacking dep-mgmt

Author: Jan-Olav Eide

token-client-kotlin-demo/pom.xml

@@ -13,9 +13,14 @@
         <kotlin.code.style>official</kotlin.code.style>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <main.class>io.ktor.server.netty.EngineMain</main.class>
-        <kotlin.compiler.jvmTarget>17</kotlin.compiler.jvmTarget>
+        <kotlin.compiler.jvmTarget>21</kotlin.compiler.jvmTarget>
     </properties>
     <dependencies>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-core</artifactId>
+            <version>2.17.0</version>
+        </dependency>
         <dependency>
             <groupId>io.ktor</groupId>
             <artifactId>ktor-server-content-negotiation-jvm</artifactId>