Add .whitesource configuration file (#6)

Co-authored-by: whitesource-bolt-for-github[bot] <42819689+whitesource-bolt-for-github[bot]@users.noreply.github.com>

.whitesource

@@ -0,0 +1,8 @@
+{
+  "checkRunSettings": {
+    "vulnerableCheckRunConclusionLevel": "failure"
+  },
+  "issueSettings": {
+    "minSeverityLevel": "LOW"
+  }
+}