Updates the MPL code used in NOTICE

[jeanduplessis]

Description of your changes

Updates the NOTICE file to reflect an up-to-date list of MPL code used.

I have:

• [x] Read and followed Upjet's contribution process.
• [x] Run make reviewable to ensure this PR is ready for review.
• [ ] ~Added backport release-x.y labels to auto-backport this PR if necessary.~

How has this code been tested

N/A