Google application credentials for logging are double base64 encoded in airbyte-secrets

### Helm Chart Version

2.0.18

### What step the error happened?

None

### Relevant information

The gcs log creds secret loads the credentials json file using the `data` key:

https://github.com/airbytehq/airbyte-platform/blob/4f7d9b0e3ab58c518ea90da473a8934c674a911b/charts/v2/airbyte/templates/gcs-log-creds-secret.yaml#L15-L18

But the main `airbyte-secrets` secret uses `stringData` so the storage credentials are encoded twice. I fixed this with a manual transformation for now. You can probably work around it by making a logging secret yourself and then pass a non-base64'd version into `global.storage.gcs.credentialsJson` but the docs do ask for a base64'd version. Kind of strange.

https://github.com/airbytehq/airbyte-platform/blob/4f7d9b0e3ab58c518ea90da473a8934c674a911b/charts/v2/airbyte/templates/secret.yaml#L10-L28

### Relevant log output

```shell

```