feat(ci): auto-highlight contributors in release notes

[Ayushmore1214]

What would you like to be added: I noticed PipeCD release notes don’t currently highlight contributors.
Other CNCF projects use automation (like release-drafter) to shout out contributors in every release, which helps with motivation and community growth.

I’m happy to prototype this with a small config so maintainers don’t have extra manual work.

Thoughts?

Why is this needed:

[Ayushmore1214]

@eeshaanSA @khanhtc1202

[Ayushmore1214]

Any thoughts on this ?

[rahulshendre]

great idea @Ayushmore1214
We should discuss more on this in the next community meeting