Fix JSON schema formatting

[jmg-duarte]

Description

The JSON schema job has been failing, this fixes it.

Changes

• Regen OpenAPI schema

How to test

CI is green

[claude]

Claude finished @jmg-duarte's task in 37s —— View job

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PR Review

• Read the diff
• Verify schema matches source docstring
• Post findings

LGTM. ✅

The change updates the generated WinningPriceEstimateEvent description in events.json from "Exactly one is emitted..." to "At most one is emitted... (because all may have errored...)". This exactly matches the source docstring in crates/event-bus-dto/src/winning_price_estimate.rs:13-14, so the committed schema is now back in sync with the source — which is what the failing JSON schema check verifies.

No correctness or style concerns. Nothing to flag inline.

[MartinquaXD]

How did the change slip past CI, though?

[jmg-duarte]

How did the change slip past CI, though?

This PR broke it: https://github.com/cowprotocol/services/actions/runs/29087308408
Since the check wasn't required it got automerged before finishing

This feature allowed it to keep going: #4583 (comment)

[MartinquaXD]

Shouldn't we make it required then?

[jmg-duarte]

Done