Updates 2.8 release notes

[DarshitChanpura]

Check List

• New functionality includes testing
• New functionality has been documented
• Commits are signed per the DCO using --signoff

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[codecov]

Codecov Report

Merging #1460 (8e10358) into 2.8 (920e6eb) will decrease coverage by 0.05%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##              2.8    #1460      +/-   ##
==========================================
- Coverage   65.51%   65.47%   -0.05%     
==========================================
  Files          93       93              
  Lines        2294     2297       +3     
  Branches      307      308       +1     
==========================================
+ Hits         1503     1504       +1     
- Misses        723      725       +2     
  Partials       68       68              

see 3 files with indirect coverage changes

[davidlago]

Shouldn't this PR be made against main and then backport to 2.x and 2.8? Or are we doing 2.8 first to expedite and then moving to main/2.x?

[davidlago]

And we shouldn't label it as [backport], since this is the actual tip of the 2.x spear getting the change for the first time, right?