connect failed: cannot create new Sqladmin Service: unexpected end of JSON input

[nataliyalevytska]

What happened?

1. installed crossplane v1.8.0 & provider-gcp v0.21.0
2. created MySQLInstance claim in namespace
3. get the following on CloudSQLInstance

Status:
  At Provider:
  Conditions:
    Last Transition Time:  2022-07-27T13:15:04Z
    Message:               connect failed: cannot create new Sqladmin Service: unexpected end of JSON input
    Reason:                ReconcileError
    Status:                False
    Type:                  Synced
Events:
  Type     Reason                   Age                  From                                                 Message
  ----     ------                   ----                 ----                                                 -------
  Warning  CannotConnectToProvider  15s (x9 over 2m44s)  managed/cloudsqlinstance.database.gcp.crossplane.io  cannot create new Sqladmin Service: unexpected end of JSON input

Details:

apiVersion: database.gcp.crossplane.io/v1beta1
kind: CloudSQLInstance
metadata:
  name: test-crossplane
spec:
  forProvider:
    databaseVersion: POSTGRES_11
    region: eu-west1
    settings:
      tier: db-custom-1-3840
      dataDiskSizeGb: 20
  providerConfigRef:
    name: gcp-provider-config
  writeConnectionSecretToRef:
    name: test-connection
    namespace: crossplane-system