Update releases.json to include v0.15.0
Update releases.json to include v0.15.0

cu12/minikube,dlorenc/minikube,r2d4/minikube,warmchang/minikube,warmchang/minikube,warmchang/minikube,dalehamel/minikube,abbytiz/minikube,dlorenc/minikube,mikegrass/minikube,dlorenc/minikube,abbytiz/minikube,dims/minikube,dlorenc/minikube,abbytiz/minikube,warmchang/minikube,dlorenc/minikube,kubernetes/minikube,dongsupark/minikube,skipjaq/minikube,kubernetes/minikube,dims/minikube,endocode/minikube,kubernetes/minikube,dalehamel/minikube,kubernetes/minikube,skipjaq/minikube,warmchang/minikube,warmchang/minikube,mikegrass/minikube,r2d4/minikube,aaron-prindle/minikube,endocode/minikube,warmchang/minikube,skipjaq/minikube,endocode/minikube,dlorenc/minikube,dlorenc/minikube,aaron-prindle/minikube,dalehamel/minikube,dongsupark/minikube,dlorenc/minikube,dongsupark/minikube,kubernetes/minikube,dims/minikube,kubernetes/minikube,mikegrass/minikube,kubernetes/minikube,r2d4/minikube,aaron-prindle/minikube,cu12/minikube,cu12/minikube