[davesnx]

Use gh-ci-action v1.2.0:

• The dune cache is saved again once it is near max-size; before, it stopped being saved.
• A fallback restore removes pins and packages that the project no longer needs.
• The opam key no longer changes with each weekly runner image.

The cache key and the cached paths change, so the first run is cold. CI ran twice on this PR: the first run cold, the second warm from the first run's cache.

Risk: two-way door; a revert restores v1.1.0 and its cache entries.

Summary by CodeRabbit

• Chores
  • Updated the versions of tools used in the continuous integration workflow.
  • The compiler version, pinned packages, and setup options remain unchanged, so this update does not alter the app’s features or behavior for users.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

• Source mode: Auto
• Repository: Unavailable
• Branch: Unavailable
• File: No configuration file from this repository applied
• Commit: Unavailable
• Layers: defaults
• Review profile: CHILL
• Plan: Advanced
• Run ID: fceaccda-e7b2-4b83-83d0-4fc6d3566bdd

📥 Commits

Reviewing files that changed from the base of the PR and between 0acedf9 and eae7777.

📒 Files selected for processing: 1

• .github/workflows/ci.yml

Included review availability: This review used your included allowance. Your plan provides up to 4 included reviews per hour; 3 remain after this review.

📝 Walkthrough

The CI workflow updates the OCaml setup and dune-cache load and save actions from v1.1.0 to v1.2.0. The compiler, pins, and setup options remain unchanged.

Changes: CI Action Version Update

Layer / File(s)	Summary
Update CI action versions .github/workflows/ci.yml	The OCaml setup and dune-cache load and save actions now use v1.2.0. The compiler, pins, and setup options remain unchanged.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~3 minutes

Change: Other

Merge Risk: ⚪ Minimal · up to eae77

The CI action upgrade is mergeable with no identified blocking risk.

Pre-merge checks: 5

Check name	Status	Explanation
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title clearly and concisely describes the main change: updating the CI action to v1.2.0.
Docstring Coverage		No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

Full details: Docstring Coverage

Explanation

No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0 files. (1 skipped: 1 unsupported.)

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Commit to this branch
• Create a new PR

• Autofix · Keep fixing CodeRabbit findings and required CI, and resolving merge conflicts

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