Use version 2.16.0 of jackson-core.

Using a version of jackson-core that does not match jackson-databind
causes problems (see #127 for details).

pom.xml

@@ -110,7 +110,7 @@
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-core</artifactId>
-            <version>2.14.2</version>
+            <version>2.16.0</version>
         </dependency>
         <dependency>
             <groupId>jakarta.json</groupId>