chore: upstream dfinity/icp-js-canisters moved to 3.6.0

[pr-automation-bot-public]

dfinity/icp-js-canisters has moved past the ref the docs are verified against.

Pinned in .sources/upstream.json	3.5.0
Latest npm release of @icp-sdk/canisters	3.6.0
Registry	https://www.npmjs.com/package/@icp-sdk/canisters
Published reference	https://js.icp.build/canisters/

What to re-check

@icp-sdk/canisters APIs, notably AssetManager in references/application-canisters.md and guides/frontends/asset-canister.md, which states a minimum of 3.5.0. This repo's semver tags lag its published versions, so npm is the release signal. Changelog: https://github.com/dfinity/icp-js-canisters/blob/main/CHANGELOG.md

How to close this

1. Review the changes above against the pages named under "What to re-check".
2. Update those pages if anything they state has changed.
3. Set pinned to 3.6.0 in .sources/upstream.json in the same PR.

If nothing in the docs is affected, bump the pin on its own and say so in the PR.

Procedure: .agents/upstream-tracking.md

[marc0olo]

Done in #370. No doc impact: 3.6.0 adds NNS converter fields and IC Management snapshot visibility. The stated minimum in references/application-canisters.md is >= 3.5.0, which 3.6.0 satisfies, so the text stands. Pin moved to 3.6.0.