Added gfcc_updater_cache_ttl for adjusting the Github updater cache TTL.

[SebastianWiz]

Context

⛑️ Ticket(s): https://secure.helpscout.net/conversation/3248978245/98934?viewId=3808239

Summary

This PR adds a new filter, gfcc_updater_cache_ttl, that allows users to override the default 5-minute GitHub updater release metadata cache TTL without editing the bundled updater library.

Checklist

• Updated customer telling them that a fix/addition is in the works.
• Added/Improved Cypress tests or a note under Summary why tests are not included in the PR.
• Added a link to this PR in the Help Scout ticket(s) in the form of a note
• Added/updated hook documentation if applicable.
• Sent a packed build of this PR/branch for the customer to test.

[gravitywiz-builder]

🪝 Hook Documentation Changes

This PR contains changes to hook documentation:

Summary:

• 🆕 1 new hooks
• ✏️ 0 modified hooks
• 🗑️ 0 removed hooks

🆕 New Hooks

• gfcc_updater_cache_ttl (gf-code-chest) - ⚠️ Undocumented

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This comment is automatically updated when new commits are pushed to this PR.

[veryspry]

@SebastianWiz I wonder if we should apply the filter from the plugin itself to increase the TTL by default. Five minutes does seem fairly aggressive. 🤔

[veryspry]

@SebastianWiz Whoops, forgot to approve.

My comment about increasing TTL by default is optional and definitely something we could wait on doing until (if) we get more reports about this.

[SebastianWiz]

@veryspry Yeah lets keep an eye on it, I'm surprised it haven't come up before!