Release next version

[merlinz01]

Last release was 2.7.2 on August 22.

[merlinz01]

Ping.

[dblock]

I worked on #851 today to get it into the release, waiting for another maintainer to approve/merge (@saimedhi @VachaShah maybe?). And I'd like to include #848 once it's passing tests.

[dblock]

I got those things merged, but it's already late here in NYC and Thanksgiving in the US tomorrow and Friday, so I'd rather not release something and find it broken those days and have to scramble to fix. Will do first thing Monday. In the meantime, appreciate if folks could test #848 from HEAD.

[dblock]

I released 2.8.0, https://github.com/opensearch-project/opensearch-py/releases/tag/v2.8.0