[VOL-5040] - Build and deploy bng for v2.12

pom.xml
-------
  o Upgrade sadis v5.11.1
  o Upgrade olt v2.5.4
  o Upgrade maven plugins: spotbugs-maven-plugin & findsecbugs-plugin

Change-Id: I655a3bd9a5a1357bc0b811dff15c176aa521a8b7
diff --git a/pom.xml b/pom.xml
index 4dd588c..3f7721e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -34,8 +34,8 @@
     <url>http://opencord.org</url>
 
     <properties>
-        <sadis.api.version>5.10.0</sadis.api.version>
-        <olt.api.version>5.2.3</olt.api.version>
+        <sadis.api.version>5.11.1</sadis.api.version>
+        <olt.api.version>5.2.4</olt.api.version>
     </properties>
 
     <modules>
@@ -85,7 +85,7 @@
             <plugin>
                 <groupId>com.github.spotbugs</groupId>
                 <artifactId>spotbugs-maven-plugin</artifactId>
-                <version>4.0.4</version>
+                <version>4.7.3.4</version>
                 <configuration>
                     <effort>Max</effort>
                     <threshold>Low</threshold>
@@ -96,7 +96,7 @@
                         <plugin>
                             <groupId>com.h3xstream.findsecbugs</groupId>
                             <artifactId>findsecbugs-plugin</artifactId>
-                            <version>1.10.1</version>
+                            <version>1.12.0</version>
                         </plugin>
                     </plugins>
                 </configuration>