feat(networkconnectivity): update the api

#### networkconnectivity:v1alpha1

The following keys were deleted:
- schemas.AttributeValue (Total Keys: 6)
- schemas.Attributes (Total Keys: 6)
- schemas.BillingView (Total Keys: 4)
- schemas.Distribution (Total Keys: 20)
- schemas.Exemplar (Total Keys: 9)
- schemas.ExplicitBuckets (Total Keys: 5)
- schemas.ExponentialBuckets (Total Keys: 8)
- schemas.HttpRequest (Total Keys: 21)
- schemas.LinearBuckets (Total Keys: 8)
- schemas.LogEntry (Total Keys: 30)
- schemas.MetricValue (Total Keys: 21)
- schemas.Money (Total Keys: 7)
- schemas.Operation (Total Keys: 26)
- schemas.QuotaProperties (Total Keys: 3)
- schemas.ReportRequest (Total Keys: 6)
- schemas.ResourceInfo (Total Keys: 5)
- schemas.TraceSpan (Total Keys: 16)
- schemas.TruncatableString (Total Keys: 5)