Update item stack sizes from update 1.39.0

[baschny]

Update item stack sizes from update 1.39.0

Trinket stack sizes adjusted to match in-game values after the 1.39.0 patch.

Changes

Item	Old	New
Colorful Shoes (Red)	1	3
Equatorial Sundial	1	3
Sextant	1	5
Train Model	1	10
Vintage Steering Wheel	1	5

Stack sizes verified via [source/tool]. Updated updatedAt to 08/01/2026 on all changed items.

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