chore: Simplified PR template (#4097)

.github/pull-request-template.md

@@ -1,42 +1,22 @@
-<!--
-Thanks for contributing to Karpenter! Before making major changes, please read karpenter.sh/docs/contributing/design-guide
--->
-
 <!-- Please follow the guidelines at https://www.conventionalcommits.org/en/v1.0.0/ and use one of the following in your title:
 feat:            <-- New features that require a MINOR version update
 fix:             <-- Bug fixes that require at PATCH version update
 docs:            <-- Documentation change that does not impact code
 chore:           <-- Metadata changes such as dependency update or configuration files
 test:            <-- Test changes that do not impact behavior
 perf:            <-- Code changes that improve performance but do not impact behavior
-BREAKING CHANGE: <-- Include if your change includes a backwards incompatible change.
+!${type}:        <-- Include ! if your change includes a backwards incompatible change.
 -->
 
-<!--
-If your change is a BREAKING CHANGE, please create or append an entry to the upgrade guide for the next minor version release at `karpenter/website/content/en/preview/upgrade-guide/_index.md`
--->
-
-Fixes # <!-- issue number -->
+Fixes #N/A <!-- issue number -->
 
 **Description**
 
 **How was this change tested?**
 
-*
-
 **Does this change impact docs?**
 - [ ] Yes, PR includes docs updates
 - [ ] Yes, issue opened: # <!-- issue number -->
 - [ ] No
 
-**Release Note**
-
-<!-- Enter your extended release note in the below block. If the PR requires
-additional action from users switching to the new release, include the string
-"action required". If no release note is required, write "NONE". -->
-
-```release-note
-
-```
-
 By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.