MAINT: update the PR template (numpy#30932)

We want first time contributors to introduce themselves to start to build a circle of trust with them.

Co-authored-by: Sebastian Berg <sebastian@sipsolutions.net>
Co-authored-by: Marten van Kerkwijk <mhvk@astro.utoronto.ca>

Author: 3 people

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,16 +1,27 @@
-<!--         ----------------------------------------------------------------
-                MAKE SURE YOUR PR GETS THE ATTENTION IT DESERVES!
-                ----------------------------------------------------------------
+### PR summary
+<!-- Please take some time to make it easier for us maintainers to understand
+  and review your PR. Describe the pull request, using the questions below as
+  guidance, and link to any relevant issues and PRs.
 
-*  FORMAT IT RIGHT:
-      https://www.numpy.org/devdocs/dev/development_workflow.html#writing-the-commit-message
+  
+  Also, have you hit all [the guidelines](https://numpy.org/devdocs/dev/index.html#guidelines)?
+  And have you filled out the disclosure section below?
 
-*  IF IT'S A NEW FEATURE OR API CHANGE, TEST THE WATERS:
-      https://www.numpy.org/devdocs/dev/development_workflow.html#get-the-mailing-list-s-opinion
+-->
+
+### First time committer introduction
+<!-- If you are new to the NumPy community, please introduce yourself. How do you
+ use NumPy, what prompted you to make this contribution? We are a community of
+ mostly volunteers, and getting to know you helps us trust your judgement
+ and welcome you into the community.
+-->
 
-*  HIT ALL THE GUIDELINES:
-      https://numpy.org/devdocs/dev/index.html#guidelines
+#### AI Disclosure
+<!-- If AI was used in the preparation of this pull request, please disclose
+the tool(s) used, how they were used, and specify what code or text is AI generated.
+If no AI tools were used, please write "No AI tools used" in this section. Read our
+policy on AI generated code at
+https://numpy.org/devdocs/dev/ai_policy.html.
 
-*  WHAT TO DO IF WE HAVEN'T GOTTEN BACK TO YOU:
-      https://www.numpy.org/devdocs/dev/development_workflow.html#getting-your-pr-reviewed
+In particular, all interaction is to be done by humans, including submission of PRs.
 -->