help: update Go Time section to Cup o' Go

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[gopherbot]

Message from Gopher Robot:

Patch Set 1:

(1 comment)

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Message from Sean Liao:

Patch Set 2:

(1 comment)

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Message from Elliot Moreau:

Patch Set 2:

(2 comments)

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Message from Sean Liao:

Patch Set 2: Commit-Queue+1

(1 comment)

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Message from Go LUCI:

Patch Set 2:

Dry run: CV is trying the patch.

Bot data: {"action":"start","triggered_at":"2025-05-11T13:51:15Z","revision":"afa2209eef15414b75c778b56eea0758b39f962a"}

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Message from Sean Liao:

Patch Set 2: -Commit-Queue

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Message from Go LUCI:

Patch Set 2:

This CL has passed the run

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Message from Go LUCI:

Patch Set 2: LUCI-TryBot-Result+1

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