Update actions/cache action to v5

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/cache	action	major	v4 → v5

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Warning

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Release Notes

actions/cache (actions/cache)

v5

Compare Source

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Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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• If you want to rebase/retry this PR, check this box

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[greptile-apps]

Greptile Overview

Greptile Summary

Updated the GitHub Actions cache action from v4 to v5 in the CI workflow. This is a straightforward dependency update that maintains backward compatibility.

• Updated actions/cache@v4 to actions/cache@v5 on line 29
• No changes to cache configuration (path, key, restore-keys remain the same)
• No impact on existing functionality or workflow behavior

Confidence Score: 5/5

• This PR is safe to merge with minimal risk
• This is a simple major version bump of the actions/cache GitHub Action from v4 to v5. The change only affects the version tag and maintains all existing configuration parameters. actions/cache v5 is backward compatible with v4 configurations, and the workflow uses standard cache parameters that are unchanged.
• No files require special attention

Important Files Changed

Filename	Overview
.github/workflows/ci.yml	Updated actions/cache from v4 to v5, no functional changes to workflow logic

Sequence Diagram

sequenceDiagram
    participant GH as GitHub Actions
    participant Cache as actions/cache@v5
    participant Composer as Composer

    GH->>GH: Checkout code
    GH->>GH: Setup PHP (matrix version)
    GH->>Cache: Request cached vendor directory
    Cache-->>GH: Return cached dependencies (if exists)
    alt Cache Miss
        GH->>Composer: Install dependencies
        Composer-->>GH: Dependencies installed
        GH->>Cache: Save vendor directory to cache
    end
    GH->>GH: Run lint/format checks
    GH->>GH: Run tests

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