fix: updating pillow version for MacOS Apple Silicon installation

[abanuelo]

Description

Adding looser constraint for pillow version to facilitate MacOS Apple Silicon wheels installation.

Issue Link

N/A

Checklist

• [X] I have tested the changes locally via pytest and/or other means
• [ ] I have added or updated relevant documentation
• [ ] I have autoformatted the code with black and isort
• [ ] I have added test cases (if applicable)

Additional Notes

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 91.17%. Comparing base (e6832d1) to head (fba853e).

Additional details and impacted files

[](https://app.codecov.io/gh/BerkeleyLearnVerify/Scenic/pull/270?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=BerkeleyLearnVerify) ```diff @@ Coverage Diff @@ ## main #270 +/- ## ========================================== + Coverage 91.08% 91.17% +0.09% ========================================== Files 54 54 Lines 13498 13500 +2 ========================================== + Hits 12295 12309 +14 + Misses 1203 1191 -12 ``` [see 4 files with indirect coverage changes](https://app.codecov.io/gh/BerkeleyLearnVerify/Scenic/pull/270/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=BerkeleyLearnVerify)