fix(deps): update rust crate protobuf to v3 [security]

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This PR contains the following updates:

Package	Type	Update	Change
protobuf	dependencies	major	2.28.0 -> 3.0.0

GitHub Vulnerability Alerts

CVE-2025-53605

Affected version of this crate did not properly parse unknown fields when parsing a user-supplied input.

This allows an attacker to cause a stack overflow when parsing the message on untrusted data.

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Configuration

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⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
• you click the rebase/retry checkbox if found above, or
• you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: Cargo.lock

Command failed: cargo update --config net.git-fetch-with-cli=true --manifest-path Cargo.toml --package [email protected] --precise 3.7.2
    Updating crates.io index
error: failed to select a version for the requirement `protobuf = "=2.28.0"`
candidate versions found which didn't match: 3.7.2
location searched: crates.io index
required by package `protobuf-codegen-pure v2.28.0`
    ... which satisfies dependency `protobuf-codegen-pure = "^2.28.0"` (locked to 2.28.0) of package `chunk-search-rs v0.1.0 (/tmp/renovate/repos/github/GiganticMinecraft/chunk-search-rs)`