Ep2025 sponsor info update & deadlines (#1076)

uncomment deadlines and shipping info to be finalised. 

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Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Ege Akman <me@egeakman.dev>
Co-authored-by: Mia Bajić <38294198+clytaemnestra@users.noreply.github.com>

Author: 4 people