Bumps Jackson dependencies (#30)

Addresses automated security alert: https://github.com/aws-cloudformation/aws-cloudformation-template-schema/network/alert/pom.xml/com.fasterxml.jackson.core:jackson-databind/open

Author: RJ Lohan

pom.xml

@@ -41,20 +41,20 @@
     <dependency>
       <groupId>com.fasterxml.jackson.core</groupId>
       <artifactId>jackson-databind</artifactId>
-      <version>2.9.6</version>
+      <version>[2.9.9,)</version>
     </dependency>
-
+	 
     <dependency>
       <groupId>com.fasterxml.jackson.core</groupId>
       <artifactId>jackson-core</artifactId>
-      <version>2.9.6</version>
+      <version>[2.9.9,)</version>
     </dependency>
 
     <!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.dataformat/jackson-dataformat-yaml -->
     <dependency>
       <groupId>com.fasterxml.jackson.dataformat</groupId>
       <artifactId>jackson-dataformat-yaml</artifactId>
-      <version>2.9.6</version>
+      <version>[2.9.9,)</version>
     </dependency>
 
     <dependency>