Added GitHub Advisories badge color - DependencyTrack/dependency-track#1225

Author: stevespringett

src/assets/scss/_custom.scss

@@ -90,6 +90,10 @@
   background-color: #E4AFAF;
   border: 1px solid #CC6666;
 }
+.label-source-github {
+  background-color: #D4BBF7;
+  border: 1px solid #A66AF7;
+}
 .label-source-internal {
   background-color: #EBE5A8;
   border: 1px solid #DCD167;