Merge branch '6.0.x'

Closes gh-12621

oauth2/oauth2-core/src/main/java/org/springframework/security/oauth2/core/http/converter/HttpMessageConverters.java

@@ -27,6 +27,7 @@ import org.springframework.util.ClassUtils;
  * Utility methods for {@link HttpMessageConverter}'s.
  *
  * @author Joe Grandja
+ * @author luamas
  * @since 5.1
  */
 final class HttpMessageConverters {
@@ -42,7 +43,7 @@ final class HttpMessageConverters {
 		jackson2Present = ClassUtils.isPresent("com.fasterxml.jackson.databind.ObjectMapper", classLoader)
 				&& ClassUtils.isPresent("com.fasterxml.jackson.core.JsonGenerator", classLoader);
 		gsonPresent = ClassUtils.isPresent("com.google.gson.Gson", classLoader);
-		jsonbPresent = ClassUtils.isPresent("javax.json.bind.Jsonb", classLoader);
+		jsonbPresent = ClassUtils.isPresent("jakarta.json.bind.Jsonb", classLoader);
 	}
 
 	private HttpMessageConverters() {