chore: bump version to 2.8.1
chore: bump version to 2.8.1

dapriett/nativescript-google-maps-sdk,dapriett/nativescript-google-maps-sdk,dapriett/nativescript-google-maps-sdk,dapriett/nativescript-google-maps-sdk,dapriett/nativescript-google-maps-sdk