chore: release 2.8

[czeslavo]

What this PR does / why we need it:

Prepare for release v2.8.0.

Which issue this PR fixes:

Part of #3199

Special notes for your reviewer:

The LICENSES FOSSA report was generated with help of @pmalek 🙇 as I wasn't able to access our organization in the tool.

PR Readiness Checklist:

Complete these before marking the PR as ready to review:

• the CHANGELOG.md release notes have been updated to reflect any significant (and particularly user-facing) changes introduced by this PR

[codecov]

Codecov Report

Base: 74.2% // Head: 74.1% // Decreases project coverage by -0.0% ⚠️

Coverage data is based on head (ef5fcaa) compared to base (e0a6e3f).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #3281     +/-   ##
=======================================
- Coverage   74.2%   74.1%   -0.1%     
=======================================
  Files        111     111             
  Lines      13275   13275             
=======================================
- Hits        9851    9850      -1     
- Misses      2798    2800      +2     
+ Partials     626     625      -1     

Impacted Files	Coverage Δ
internal/dataplane/parser/parser.go	90.5% <0.0%> (-1.7%)	⬇️
...ternal/controllers/gateway/httproute_controller.go	54.2% <0.0%> (+1.6%)	⬆️

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☔ View full report at Codecov.
📢 Do you have feedback about the report comment? Let us know in this issue.

[pmalek]

Just a note about the FOSSA report: I'm not sure why it has so many deletions (+8k,-12k).

Here's the public link for the report so that everyone can download what's basically in LICENCES file.

[pmalek]

🚢