Exlude old version of jackson-core that doesn't work with updated Spring framework

@@ -50,7 +50,7 @@
         <commons-validator.version>1.5.0</commons-validator.version>
         <commons-io.version>2.5</commons-io.version>
         <commons-csv.version>1.4</commons-csv.version>
-        <jackson.version>2.9.7</jackson.version>
+        <jackson.version>2.9.0</jackson.version>
         <json-schema-validator.version>2.2.6</json-schema-validator.version>
         <scala.version>2.11</scala.version>
         <akka.version>2.4.2</akka.version>
@@ -792,6 +792,12 @@
                 <groupId>de.ruedigermoeller</groupId>
                 <artifactId>fst</artifactId>
                 <version>${fst.version}</version>
+                <exclusions>
+                    <exclusion>
+                        <groupId>com.fasterxml.jackson.core</groupId>
+                        <artifactId>jackson-core</artifactId>
+                    </exclusion>
+                </exclusions>
             </dependency>
             <dependency>
                 <groupId>io.springfox.ui</groupId>