GH-5723: fix compile errors in workbench and http-client for Jackson 3

  - RDF4JProtocolSession, DeleteServlet, QueryServlet: update
ObjectMapper
    and ObjectNode imports to tools.jackson.databind.*

Author: aschwarte10

core/http/client/src/main/java/org/eclipse/rdf4j/http/client/RDF4JProtocolSession.java

@@ -84,7 +84,7 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.fasterxml.jackson.databind.ObjectMapper;
+import tools.jackson.databind.ObjectMapper;
 
 /**
  * A {@link SPARQLProtocolSession} subclass which extends the standard SPARQL 1.1 Protocol with additional

tools/workbench/src/main/java/org/eclipse/rdf4j/workbench/commands/DeleteServlet.java

@@ -22,10 +22,9 @@
 import org.eclipse.rdf4j.workbench.util.TupleResultBuilder;
 import org.eclipse.rdf4j.workbench.util.WorkbenchRequest;
 
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.databind.node.ObjectNode;
-
 import jakarta.servlet.http.HttpServletResponse;
+import tools.jackson.databind.ObjectMapper;
+import tools.jackson.databind.node.ObjectNode;
 
 /**
  * Servlet responsible for presenting the list of repositories, and deleting the chosen one.

tools/workbench/src/main/java/org/eclipse/rdf4j/workbench/commands/QueryServlet.java

@@ -57,13 +57,12 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.databind.node.ObjectNode;
-
 import jakarta.servlet.ServletConfig;
 import jakarta.servlet.ServletException;
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
+import tools.jackson.databind.ObjectMapper;
+import tools.jackson.databind.node.ObjectNode;
 
 public class QueryServlet extends TransformationServlet {