Unity adapter: The fix for NPE commit is not published

[Bhambya]

I'm using the unity adapter version 4.9.2.0. This commit was made before the release but it's not incorporated into the release. We are still getting NPEs from prod at this location:

Fatal Exception: java.lang.NullPointerException
Attempt to invoke virtual method 'java.lang.String com.unity3d.services.banners.BannerView.getPlacementId()' on a null object reference
com.google.ads.mediation.unity.UnityBannerAd$1.onBannerShown (UnityBannerAd.java:112)
com.unity3d.services.banners.BannerViewCache$2.run (BannerViewCache.java:114)
android.os.Handler.handleCallback (Handler.java:958)
android.os.Handler.dispatchMessage (Handler.java:99)
android.os.Looper.loopOnce (Looper.java:230)
android.os.Looper.loop (Looper.java:319)
android.app.ActivityThread.main (ActivityThread.java:8913) 

Please release a new version with the fix.