Update docs changelog (for PR #59639) (#59773)

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: Joe Clark <31087804+jc-clark@users.noreply.github.com>

Author: 3 people

CHANGELOG.md

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 # Docs changelog
 
+**23 February 2026**
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+Added a new how-to article, [Automating tasks with Copilot CLI and GitHub Actions](https://docs.github.com/en/copilot/how-tos/copilot-cli/automate-with-actions), that walks through how to run Copilot CLI inside a GitHub Actions workflow in non-interactive (programmatic) mode. The article covers the full pattern—trigger, setup, install, authenticate, and run—and includes an example workflow that generates a daily summary of repository changes.
+<hr>
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 **17 February 2026**
 
 We’ve added a new tutorial, "[Using hooks with Copilot CLI for predictable, policy-compliant execution](https://docs.github.com/en/copilot/tutorials/copilot-cli-hooks)", to help teams configure repository-scoped hooks that log prompts and tool usage, enforce guardrails with `preToolUse`, and roll out policies safely across repositories.