RST_STREAM error keeps showing up

#### Environment details

- OS: macOS Catalina 10.15.5 Beta (19F53f)
- Node.js version: 13.7.0
- npm version: 6.13.6
- `@google-cloud/firestore` version: 3.7.4

#### Steps to reproduce

This error keeps appearing over and over in my logs (not regularly reproducible):
```
Error: 13 INTERNAL: Received RST_STREAM with code 2
at Object.callErrorFromStatus (/api/node_modules/@grpc/grpc-js/src/call.ts:81)
at Object.onReceiveStatus (/api/node_modules/@grpc/grpc-js/src/client.ts:324)
at Object.onReceiveStatus (/api/node_modules/@grpc/grpc-js/src/client-interceptors.ts:439)
at Object.onReceiveStatus (/api/node_modules/@grpc/grpc-js/src/client-interceptors.ts:402)
at Http2CallStream.outputStatus (/api/node_modules/@grpc/grpc-js/src/call-stream.ts:228)
at Http2CallStream.maybeOutputStatus (/api/node_modules/@grpc/grpc-js/src/call-stream.ts:278)
at Http2CallStream.endCall (/api/node_modules/@grpc/grpc-js/src/call-stream.ts:262)
at ClientHttp2Stream. (/api/node_modules/@grpc/grpc-js/src/call-stream.ts:532)
at ClientHttp2Stream.emit (events.js:315)
at ClientHttp2Stream.EventEmitter.emit (domain.js:485)
at emitErrorCloseNT (internal/streams/destroy.js:76)
at processTicksAndRejections (internal/process/task_queues.js:84)
```