Update dependencies.

pom.xml

@@ -41,18 +41,18 @@
       <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 
       <felix.bundle.plugin.version>3.2.0</felix.bundle.plugin.version>
-      <felix.version>5.6.1</felix.version>
+      <felix.version>5.6.2</felix.version>
       <hibernate.version>5.2.6.Final</hibernate.version>
       <javassist.version>3.21.0-GA</javassist.version>
       <jndi.version>0.11.4.1</jndi.version>
       <maven.release.version>2.5.3</maven.release.version>
       <metrics.version>3.1.2</metrics.version>
       <simpleclient.version>0.0.19</simpleclient.version>
-      <mockito.version>2.6.2</mockito.version>
-      <pax.exam.version>4.9.2</pax.exam.version>
+      <mockito.version>2.7.14</mockito.version>
+      <pax.exam.version>4.10.0</pax.exam.version>
       <pax.url.version>2.5.2</pax.url.version>
-      <slf4j.version>1.7.22</slf4j.version>
-      <log4j.version>2.7</log4j.version>
+      <slf4j.version>1.7.25</slf4j.version>
+      <log4j.version>2.8.1</log4j.version>
       <commons.csv.version>1.4</commons.csv.version>
       <h2.version>1.4.193</h2.version>
       <junit.version>4.12</junit.version>