Automatically Refresh the XRPC credential

[jlewi]

Right now we don't automatically refresh the credential so we get errors like the following for long running requests.

2024-11-09T11:43:27.909-0800    ERROR   application/app.go:155  github.com/jlewi/bsctl/pkg/application.(*App).ApplyPaths        Apply failed    {"path": "/Users/jlewi/git_bskylists/platform_community_builder.yaml", "error": "failed to apply one or more resources; Causes: Failed to get followers for seed kelseyhightower.com: getting followers for handle kelseyhightower.com: XRPC ERROR 400: ExpiredToken: Token has expired"}