updating pull request template (#5310)

Test will never run given that the only changes are to the template

Author: Alex

.github/PULL_REQUEST_TEMPLATE.md

@@ -15,7 +15,7 @@ Fixes #(issue)
 - [ ] New feature (non-breaking change which adds functionality)
 - [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
 
-## Checklist:
+## Checklist for 1.x:
 
 - [ ] I have selected the correct base branch.
 - [ ] I have performed a self-review of my own code.
@@ -30,3 +30,21 @@ Fixes #(issue)
 - [ ] I have tested my code on the live network.
 - [ ] I have checked the Deploy Preview and it looks correct.
 - [ ] I have updated the `CHANGELOG.md` file in the root folder.
+
+## Checklist for 4.x:
+
+- [ ] I have selected the correct 4.x base branch.
+- [ ] Within the description, the feature or issue is discussed in detail or an issue is linked.   
+- [ ] I have performed a self-review of my own code
+- [ ] I have commented my code, particularly in hard-to-understand areas.
+- [ ] I have added any required tests for the changes I made 
+- [ ] I have made corresponding changes to the documentation
+- [ ] Any dependent changes have been merged and published in downstream modules.
+- [ ] I ran `yarn` successfully
+- [ ] I ran `yarn lint` successfully
+- [ ] I ran `yarn build:web` successfully
+- [ ] I ran `yarn test:unit` successfully
+- [ ] I ran `yarn test:integration` successfully
+- [ ] I ran `compile:contracts` successfully
+- [ ] I have tested my code.
+- [ ] I have updated the corresponding `CHANGELOG.md` file in the packages I have edited.