Upgraded BC, Jackson, HTTP Client, HTTP Signatures dependencies (#467)

* Update CHANGELOG

Author: dekobon

CHANGELOG.md

@@ -10,6 +10,7 @@ This project aims to adhere to [Semantic Versioning](http://semver.org/).
    Mandatory.
 ### Changed
  - [Deprecate Jobs Multipart implementation and disable integration tests](https://github.com/joyent/java-manta/issues/459)
+ - Upgraded Bouncy Castle, Apache HTTP Client, Jackson and Java HTTP Signatures dependencies
 ### Fixed
  - [Client-side encryption does not use libnss when doing simple PUT](https://github.com/joyent/java-manta/issues/449)
  - [Server-side MPU is hardcoded to create a directory prefix of only a single character](https://github.com/joyent/java-manta/issues/451)

pom.xml

@@ -157,11 +157,11 @@
         <maven-error-prone-core.version>2.1.1</maven-error-prone-core.version>
 
         <!-- Dependency versions -->
-        <dependency.http-client-signature.version>4.0.8</dependency.http-client-signature.version>
-        <dependency.apache-http-client.version>4.5.5</dependency.apache-http-client.version>
-        <dependency.bouncycastle.version>1.59</dependency.bouncycastle.version>
+        <dependency.http-client-signature.version>4.0.9</dependency.http-client-signature.version>
+        <dependency.apache-http-client.version>4.5.6</dependency.apache-http-client.version>
+        <dependency.bouncycastle.version>1.60</dependency.bouncycastle.version>
         <dependency.fasterxml-uuid>3.1.4</dependency.fasterxml-uuid>
-        <dependency.jackson.version>2.9.1</dependency.jackson.version>
+        <dependency.jackson.version>2.9.4</dependency.jackson.version>
         <dependency.jnagmp.version>2.1.0</dependency.jnagmp.version>
         <dependency.urlbuilder.version>2.0.9</dependency.urlbuilder.version>