bump default CI toolchain to 1.86

[tomtau]

Summary by CodeRabbit

• Chores
  • Updated Rust compiler toolchain to 1.86.0 in the CI build pipeline.
  • Suppressed a documentation lint to reduce spurious warnings during checks and documentation builds.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 267ca37b-32ac-4d31-85d4-224d2ee9bec0

📥 Commits

Reviewing files that changed from the base of the PR and between 3884964 and 7a3f032.

📒 Files selected for processing (1)

• pest/src/lib.rs

✅ Files skipped from review due to trivial changes (1)

• pest/src/lib.rs

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📝 Walkthrough

Walkthrough

Updated the default Rust toolchain from 1.85.0 to 1.86.0 in the composite GitHub Action and propagated that version bump to multiple CI jobs; also added a crate-level Clippy lint suppression in pest/src/lib.rs.

Changes

Cohort / File(s)	Summary
GitHub Actions: toolchain bump /.github/actions/setup/action.yml, /.github/workflows/ci.yml	Default toolchain input and CI job toolchain strings updated from 1.85.0 → 1.86.0 for check, testing, doc, dependency, and hack jobs.
Lint attribute pest/src/lib.rs	Added #[allow(clippy::doc_overindented_list_items)] crate-level attribute to silence a Clippy doc lint; no API or behavior changes.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Possibly related PRs

• bump toolchain #1090: Changes Rust toolchain versions in the same GitHub Actions files.
• bump toolchain to 1.85 #1160: Modifies CI/toolchain configuration including the composite action and workflow toolchain strings.
• bump the CI toolchain to 1.82 #1101: Updates CI workflow toolchain versions for the same jobs (check, testing, doc, dependency, hack).

Suggested reviewers

• NoahTheDuke

Poem

🐰 I hopped through CI with a tiny thump,
Swapped one point eight five for one point eight six—bump!
Lints soothed, workflows hum, pipelines in tune,
I nibble on code and hum a bright tune. 🥕✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately summarizes the main change: updating the default CI toolchain version from 1.85.0 to 1.86.0 across the action and workflow configuration files.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix-ci

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