Do not use alpha version of logback

The dependencies specify 1.3.0-alpha5 of logback.  Switched it back
to 1.2.3.

Issue-ID: INT-1574
Signed-off-by: Jim Hahn <jrh3@att.com>
Change-Id: Ia3c0cd1f76b581f402fad6c4a48dbab8cd3ed7e3
diff --git a/dependencies/pom.xml b/dependencies/pom.xml
index c6cd9c4..cb3c304 100644
--- a/dependencies/pom.xml
+++ b/dependencies/pom.xml
@@ -109,7 +109,7 @@
       <dependency>
         <groupId>ch.qos.logback</groupId>
         <artifactId>logback-classic</artifactId>
-        <version>1.3.0-alpha5</version>
+        <version>1.2.3</version>
       </dependency>
       <dependency>
         <groupId>org.apache.httpcomponents</groupId>