Add Rust runtime support

[ChiragAgg5k]

What does this PR do?

• Adds Rust 1.83 as a supported runtime.
• Uses the published Open Runtimes image tag pattern: openruntimes/rust:${version}-1.83.
• Marks Rust support for linux/amd64 and linux/arm64.

Verification

• composer test -- --filter RuntimesTest
• composer validate --strict
• composer lint
• docker manifest inspect openruntimes/rust:v5-1.83 resolves with linux/amd64 and linux/arm64 manifests.

Release source

• Open Runtimes release: https://github.com/open-runtimes/open-runtimes/releases/tag/0.11.0
• Rust publish job: https://github.com/open-runtimes/open-runtimes/actions/runs/25200811529/job/73891309600

[greptile-apps]

Greptile Summary

Adds Rust 1.83 as a new supported runtime by registering it in Runtimes.php, following the same pattern as Go, Bun, and other recently added runtimes. The base image is fully pinned (rust:1.83.0-alpine3.21), the openruntimes image tag matches the convention, and linux/amd64 + linux/arm64 support is correctly declared.

Confidence Score: 5/5

Safe to merge — minimal, well-scoped change that follows all established conventions.

Single-file change that adds one runtime entry; base image is fully pinned with both Rust patch version and Alpine version; openruntimes image tag and architecture list match the PR description and the existing patterns across all other runtimes. No logic, security, or correctness issues found.

No files require special attention.

Important Files Changed

Filename	Overview
src/Runtimes/Runtimes.php	Adds Rust 1.83 runtime with fully pinned base image (rust:1.83.0-alpine3.21) and correct openruntimes image tag pattern; follows existing conventions for all other runtimes.

_{Reviews (2): Last reviewed commit: "Add Rust runtime support" | Re-trigger Greptile}