Remove stale workflow; fix lint

[zliang-akamai]

No description provided.

[Copilot]

Pull Request Overview

This PR adds two new GitHub labels to help manage issue lifecycle and prevent automatic closure by stale bots.

• Adds a "keep" label to prevent GitHub from automatically closing issues
• Adds a "stale" label to indicate issues that will be closed soon by automation

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[zliang-akamai]

This is actually a behavior change, that when Devices is not included when defining an instance of FirewallCreateOptions, it will change from an empty map to omitted from request body.

r, e := json.Marshal(linodego.FirewallCreateOptions{})
if e != nil {
	log.Fatal(e)
}
fmt.Println(string(r))

Original behavior:

{"rules":{"inbound":null,"inbound_policy":"","outbound":null,"outbound_policy":""},"devices":{}}

Updated behavior:

{"rules":{"inbound":null,"inbound_policy":"","outbound":null,"outbound_policy":""}}

I can't think of any actual effect on the API call except this body change, so I don't think this is a breaking change. But let me know if you think about it differently.

[lgarber-akamai]

@zliang-akamai Per our conversation in Slack, do you think it'd make sense to get rid of the stale workflow altogether in this PR?

[zliang-akamai]

@lgarber-akamai done, thanks!

[lgarber-akamai]

Thank you for handling this!