Bump op-reth to v2.4.2

[sameersubudhi]

Bumps client version:

• op-reth: v2.4.1 → v2.4.2

COMMIT pin in reth/Dockerfile verified against the dereferenced annotated tag in ethereum-optimism/optimism (f863ff4c12531b315d666331d43da3aeb3719388).

Also aligns the builder base image with upstream's toolchain pin: rust/rust-toolchain.toml pins channel = "1.95" (workspace rust-version = "1.95"), so rustup was syncing 1.95 inside the rust:1.94 builder on every build (info: syncing channel updates for 1.95-x86_64-unknown-linux-gnu in the v2.4.1 build). ARG RUST_VERSION is now 1.95, so no toolchain is downloaded mid-build.

Bug-fix release only — no flag or config changes affecting this setup. The release's deprecation notices (proofs v1 DB format, import-op/import-receipts-op, both by Aug 31) do not apply here; neither is used.

Resolves PLAT-728.

🤖 Generated with Claude Code

Summary by CodeRabbit

• Documentation

  • Updated the documented op-reth version to v2.4.2.
  • Updated the source-build link to the v2.4.2 source tree.

• Chores

  • Updated Docker builds to use Optimism op-reth v2.4.2.
  • Updated the Rust build environment to version 1.95 for improved compatibility with the latest build.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 2d1f886d-efd8-4f5b-848d-b80eb32ce7b0

📥 Commits

Reviewing files that changed from the base of the PR and between 732164a and 18d1c00.

📒 Files selected for processing (1)

• reth/Dockerfile

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📝 Walkthrough

Walkthrough

The README now documents op-reth v2.4.2. The Docker build uses Rust 1.95, the v2.4.2 source tag, and its pinned commit.

Changes

op-reth version update

Layer / File(s)	Summary
Version documentation and build pin README.md, reth/Dockerfile	The README references op-reth v2.4.2 and its source tree. The Docker build uses Rust 1.95, the v2.4.2 tag, and the updated pinned commit.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Merge Risk: ⚪ Minimal · up to 18d1c

This PR updates op-reth from v2.4.1 to v2.4.2 and adjusts the associated documentation; no actionable merge-blocking risk remains beyond normal checks and review.

Possibly related PRs

• LiskHQ/lisk-node#137: Both PRs update the op-reth version and pinned Docker commit.

Suggested reviewers: nazgolze

Poem

A rabbit checks the version trail,
v2.4.2 rides the build rail.
Rust hops to one-point-nine-five,
The pinned source keeps builds alive.
README and Dockerfile set sail.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title clearly and concisely identifies the primary change: updating op-reth to v2.4.2.
Description check	✅ Passed	The description explains the problem, implementation, issue, and verification context, but it omits the template's explicit testing section.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch plat-728-bump-op-reth-to-v242

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