Add release PR workflow to auto update PR description

[jjw24]

Automatically update release PR's description with the list of milestone PR title and number

[Copilot]

Pull Request Overview

This PR introduces an automated workflow that updates a release PR’s description with milestone pull request information.

• Adds a GitHub Actions workflow (.github/workflows/release_pr.yml) triggered by pull request events and manual dispatch.
• Implements a Python script (.github/update_release_pr.py) that fetches milestone and PR data and updates the release PR description accordingly.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
.github/workflows/release_pr.yml	Adds workflow configuration to trigger and update the release PR on specific events.
.github/update_release_pr.py	Implements functions to fetch GitHub milestones and PRs and update the PR description with release notes.

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Be a legend 🏆 by adding a before and after screenshot of the changes you made, especially if they are around UI/UX.

[Copilot]

Pull Request Overview

This PR adds a workflow and helper script to automatically update a release pull request’s description with categorized lists of merged PR titles and numbers.

• Introduces a GitHub Actions workflow (release_pr.yml) to trigger on PR events against master and on-demand.
• Adds update_release_pr.py to fetch milestone PRs, format release notes, and patch the PR description.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 6 comments.

File	Description
.github/workflows/release_pr.yml	Defines when and how to run the release‐PR update job
.github/update_release_pr.py	Implements logic to gather PRs, build notes, and update the PR

Comments suppressed due to low confidence (2)

.github/update_release_pr.py:6

• The parameters label and state are declared but not used inside this function. Consider removing them or implementing filtering here to keep the API consistent.

def get_github_prs(token: str, owner: str, repo: str, label: str = "", state: str = "all") -> list[dict]:

.github/update_release_pr.py:1

• No tests are provided for this script, making it harder to verify changes. Consider adding unit tests for core functions like get_github_prs and get_pr_descriptions.

from os import getenv

[github-actions]

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