docs: update template to reflect merge requirements for repo

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,39 +1,68 @@
-**Description:** Describe in a couple of sentences what this PR adds
+<!--
 
-**ISSUE:** Link to GitHub issue
+Please give your pull request a short but descriptive title.
+Use conventional commits to separate and summarize commits logically:
+https://open-edx-proposals.readthedocs.io/en/latest/oep-0051-bp-conventional-commits.html
 
-**Dependencies:** dependencies on other outstanding PRs, issues, etc.
+Use this template as a guide. Omit sections that don't apply.
+You may link to information rather than copy it, but only if the link is publicly readable.
+If the linked information must be private (because it contains secrets), clearly label the link as private.
 
-**Merge deadline:** List merge deadline (if any)
+-->
 
-**Installation instructions:** List any non-trivial installation
-instructions.
+## Description
 
-**Testing instructions:**
+Describe what this pull request changes, and why. Include implications for people using this change.
+Design decisions and their rationales should be documented in the repo (docstring / ADR), per
+[OEP-19](https://open-edx-proposals.readthedocs.io/en/latest/oep-0019-bp-developer-documentation.html), and can be
+linked here.
 
-1. Open page A
-2. Do thing B
-3. Expect C to happen
-4. If D happened instead - check failed.
+Useful information to include:
 
-**Reviewers:**
-- [ ] tag reviewer
-- [ ] tag reviewer
+- Motivation and context of the implementation
+- What's the intended use of this change?
+- Use cases and usage examples available
 
-**Merge checklist:**
+## Supporting information
+
+Link to other information about the change, such as Jira issues, GitHub issues, or Discourse discussions. Also, link to any relevant documentation useful for reviewers.
+Be sure to check they are publicly readable, or if not, repeat the information here.
+
+## Testing instructions
+
+Please provide detailed step-by-step instructions for testing this change, including any necessary setup or configuration.
+
+## Deadline
+
+"None" if there's no rush, or provide a specific date or event (and reason) if there is one.
+
+## Other information
+
+Include anything else that will help reviewers and consumers understand the change.
+
+- Any other PRs or issues that should be linked here? Any related PRs?
+- Any special concerns or limitations? For example: deprecations, migrations, security, or accessibility. List any concern about this PR here, e.g. inelegant solutions, hacks, quick-and-dirty implementations, concerns about migrations, etc.
+
+## Checklists
+
+Check off if complete *or* not applicable:
+
+**Merge Checklist:**
 - [ ] All reviewers approved
+- [ ] Reviewer tested the code following the testing instructions
 - [ ] CI build is green
 - [ ] Version bumped
-- [ ] Changelog record added
+- [ ] Changelog record added with short description of the change and current date
 - [ ] Documentation updated (not only docstrings)
-- [ ] Commits are squashed
+- [ ] Code dependencies reviewed
+- [ ] Fixup commits are squashed away
+- [ ] Unit tests added/updated
+- [ ] Noted any: Concerns, dependencies, migration issues, deadlines, tickets
 
-**Post merge:**
+**Post Merge:**
 - [ ] Create a tag
+- [ ] Create a release on GitHub
 - [ ] Check new version is pushed to PyPI after tag-triggered build is
       finished.
 - [ ] Delete working branch (if not needed anymore)
-
-**Author concerns:** List any concerns about this PR - inelegant
-solutions, hacks, quick-and-dirty implementations, concerns about
-migrations, etc.
+- [ ] Upgrade the package in the Open edX platform requirements (if applicable)