use slf4j 1.7.0

git-svn-id: https://svn.apache.org/repos/asf/archiva/redback/redback-components/trunk@1381919 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index 31dc93a..7fa7729 100644
--- a/pom.xml
+++ b/pom.xml
@@ -38,7 +38,7 @@
   <properties>
     <commons-configuration.version>1.8</commons-configuration.version>
     <commons-lang.version>2.6</commons-lang.version>
-    <slf4jVersion>1.6.6</slf4jVersion>
+    <slf4jVersion>1.7.0</slf4jVersion>
     <springVersion>3.1.2.RELEASE</springVersion>
     <distUrlReleaseRepo>https://archiva-repository.apache.org/archiva/repository/archiva-releases-stage/</distUrlReleaseRepo>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>