chore: Update curve25519-dalek from 4.1.1 to 4.1.3 in Rust extension (#…

…2134)

## Motivation

This addresses a vulnerability.

## Change Summary

Update

## Merge Checklist

- [x] PR title adheres to the [conventional
commits](https://www.conventionalcommits.org/en/v1.0.0/) standard
- [x] PR has a
[changeset](https://github.com/farcasterxyz/hub-monorepo/blob/main/CONTRIBUTING.md#35-adding-changesets)
- [ ] PR has been tagged with a change label(s) (i.e. documentation,
feature, bugfix, or chore)
- [ ] PR includes
[documentation](https://github.com/farcasterxyz/hub-monorepo/blob/main/CONTRIBUTING.md#32-writing-docs)
if necessary.
- [x] All [commits have been
signed](https://github.com/farcasterxyz/hub-monorepo/blob/main/CONTRIBUTING.md#22-signing-commits)


<!-- start pr-codex -->

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## PR-Codex overview
This PR updates the `curve25519-dalek` package in the Rust extension of
the `@farcaster/hubble` addon from version 4.1.1 to 4.1.3.

### Detailed summary
- Updated `curve25519-dalek` package version from 4.1.1 to 4.1.3
- Removed `platforms` package
- Updated checksum for `curve25519-dalek` package

> ✨ Ask PR-Codex anything about this PR by commenting with `/codex {your
question}`

<!-- end pr-codex -->

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Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.changeset/silver-wombats-rule.md

@@ -0,0 +1,5 @@
+---
+"@farcaster/hubble": patch
+---
+
+chore: Update curve25519-dalek from 4.1.1 to 4.1.3 in Rust extension