fix: update jackson dependency to a newer and safer version

jackson.version has been updated from 2.12.5 to
2.14.0-rc2
2.12.5 has a security vulnerability

todolist/pom.xml

@@ -11,7 +11,7 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <jupiter.version>5.8.1</jupiter.version>
-        <jackson.version>2.12.5</jackson.version>
+        <jackson.version>2.14.0-rc2</jackson.version>
         <skipUiTests>false</skipUiTests>
         <headlessTests>false</headlessTests>
     </properties>