git: openjdk/leyden-docs: master: Adding latest talk to the list (JChampions 2026)

[Aleksey Shipilev]

Changeset: f1c784ba
Branch: master
Author:    María Arias de Reyna Domínguez <726590+Delawen at users.noreply.github.com>
Committer: Aleksey Shipilev <shade at openjdk.org>
Date:      2026-01-30 14:12:21 +0000
URL:       https://git.openjdk.org/leyden-docs/commit/f1c784baeb9ea33aec9581e0d4867cd5462e551b

Adding latest talk to the list (JChampions 2026)

! site/_index.md