Specify findbugs plugin version

Change-Id: I3c85f761386b05ab40173b944966d4448ba8d033
diff --git a/pom.xml b/pom.xml
index 44263a4..57362b0 100644
--- a/pom.xml
+++ b/pom.xml
@@ -419,6 +419,12 @@
                 </plugin>
 
                 <plugin>
+                    <groupId>org.codehaus.mojo</groupId>
+                    <artifactId>findbugs-maven-plugin</artifactId>
+                    <version>3.0.0</version>
+                </plugin>
+
+                <plugin>
                     <groupId>org.apache.felix</groupId>
                     <artifactId>maven-scr-plugin</artifactId>
                     <version>1.20.0</version>