Update spotbugs plugin

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

app/build.gradle

@@ -293,7 +293,7 @@ dependencies {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
     spotbugsPlugins 'com.h3xstream.findsecbugs:findsecbugs-plugin:1.11.0'
-    spotbugsPlugins 'com.mebigfatguy.fb-contrib:fb-contrib:7.4.6'
+    spotbugsPlugins 'com.mebigfatguy.fb-contrib:fb-contrib:7.4.7'
 }
 
 task ktlint(type: JavaExec, group: "verification") {