update ignore artifacts (#5160)

Author: VinayGuthal

buildSrc/src/main/java/com/google/firebase/gradle/bomgenerator/BomGeneratorTask.java

@@ -149,6 +149,7 @@ public abstract class BomGeneratorTask extends DefaultTask {
           "firebase-ml-model-interpreter",
           "firebase-perf-license",
           "firebase-plugins",
+          "firebase-sessions",
           "firebase-storage-common",
           "firebase-storage-common-license",
           "firebase-storage-license",