Add missing actions: write permission to stale workflows

[Copilot]

Summary

This PR adds the required actions: write permission to workflow jobs that use actions/stale. The actions/stale action needs write access to the Actions API to delete its old cache before saving a new one.

Changes

Updated two workflow files in the auto-merged repositories:

• auto-merge/contrib/.github/workflows/close-stale.yml
• auto-merge/js/.github/workflows/close-stale.yml

Both files now include a permissions block at the job level with the following structure:

permissions:
  contents: read
  actions: write # because actions/stale deletes its old cache before saving new one
  issues: write
  pull-requests: write

The permissions are correctly ordered with:

1. contents: read (base permission)
2. actions: write (required for cache management)
3. issues: write (required for managing issue labels and comments)
4. pull-requests: write (required for managing PR labels and comments)

Why This Matters

Without the actions: write permission, the actions/stale action may fail or operate with degraded functionality when trying to manage its cache, potentially causing workflow failures or unexpected behavior.

Fixes #[issue-number]

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Add missing actions/stale permission</issue_title>
<issue_description>Check if any workflow jobs are using actions/stale.

If so, make sure that the permissions block for that job contains

actions: write

If any of the other permissions lines have trailing comments, then add a trailing comment for this one too:

actions: write # because actions/stale deletes its old cache before saving new one

Place this new permission in a specific order within the permissions, directly before both:

issues: write
pull-requests: write

(which implicitly means after contents: read)</issue_description>

Comments on the Issue (you are @copilot in this section)

Fixes #23

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