Firebase Admin .NET SDK v3.1.0

New Features

• feat(fcm): Add DirectBootOk field to AndroidConfig (#431)

Miscellaneous

• [chore] Release 3.1.0 (#432)
• chore: Add X-Goog-Api-Client metric header to outgoing requests (#430)
• chore(deps): bump System.Security.Cryptography.Xml in /FirebaseAdmin (#429)
• chore(deps): bump System.Text.Json (#428)
• chore(deps): bump System.Text.Json (#427)
• chore(deps): bump Microsoft.NET.Test.Sdk in /FirebaseAdmin (#422)
• chore(deps): bump actions/download-artifact from 4.1.7 to 4.1.8 (#423)