chore: skip TLS verification for the Mattermost webhook

[KamilEmeleev]

Summary by CodeRabbit

• Chores
  • Updated automated pull request and release notifications to improve delivery in environments with certificate validation issues.
  • No changes were made to the product experience or publicly available features.

[coderabbitai]

📝 Walkthrough

Walkthrough

The pull request updates Mattermost notification steps in pull request and release workflows. Each step sets NODE_TLS_REJECT_UNAUTHORIZED to '0'.

Changes

Mattermost notification workflows

Layer / File(s)	Summary
Mattermost notification TLS settings .github/workflows/pr-notification.yml, .github/workflows/release.yml	The pull request workflow sets NODE_TLS_REJECT_UNAUTHORIZED for main and development channel notifications. The release workflow sets the same variable for its notification step.

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

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main change: disabling TLS verification for Mattermost webhook notifications.
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.

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/MM-notifications

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[github-actions]

Visit the preview URL for this PR (updated for commit 97bf11c):

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In @.github/workflows/pr-notification.yml:
- Around line 18-19: Remove the NODE_TLS_REJECT_UNAUTHORIZED: '0' environment
override from all Mattermost notification steps:
.github/workflows/pr-notification.yml lines 18-19 and 28-29, and
.github/workflows/release.yml lines 55-56. Preserve webhook notifications by
relying on a valid certificate chain or configuring a trusted private CA.

🪄 Autofix

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 9d3abc09-2d9b-4dcf-a91b-555f080b258b

📥 Commits

Reviewing files that changed from the base of the PR and between acd808c and 97bf11c.

📒 Files selected for processing (2)

• .github/workflows/pr-notification.yml
• .github/workflows/release.yml