Enable dependabot on github

Change-Id: I467837526ea83d4214417ddcf7efe3d4ae3f9059
diff --git a/.gitignore b/.gitignore
index c55bdbd..57d3696 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 .*
 !/.gitignore
+!/.github
 plugin/target
 dependency-reduced-pom.xml
 /sandbox