Update PR template

[AaronFeickert]

Description

Not every PR needs new tests. This PR updates the PR template to make this more clear.

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature/Enhancement (non-breaking change which adds functionality or enhances an existing one)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Refactor
• New or updated tests
• Dependency Update

Notes to Reviewers

N/A

Checklist

• I have performed a self-review of my code.
• I have commented my code where necessary.
• I have updated the documentation if needed.
• My changes do not introduce new warnings.
• I have added tests that prove my changes are effective or that my feature works.
• New and existing tests pass with my changes.

Related Issues

N/A

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 54.61%. Comparing base (d23d60a) to head (1570504).
Report is 2 commits behind head on main.

@@           Coverage Diff           @@
##             main     #665   +/-   ##
=======================================
  Coverage   54.60%   54.61%           
=======================================
  Files         318      318           
  Lines       34067    34067           
=======================================
+ Hits        18603    18606    +3     
+ Misses      15464    15461    -3     

see 6 files with indirect coverage changes

[storopoli]

ACK 1570504

[github-actions]

Commit: 2b82779

SP1 Performance Test Results

program	cycles	success
BTC_BLOCKSPACE	30,370,596	✅
EL_BLOCK	97,975	✅
CL_BLOCK	89,783	✅
L1_BATCH	30,419,814	✅
L2_BATCH	3,566	✅
CHECKPOINT	25,699	✅