v2.3: Publish agave-xdp crate (backport of #6448)

[mergify]

Problem

Publishing solana-turbine crate fails because the agave-xdp crate is configured to not publish

error: no matching package named `agave-xdp` found
location searched: `kellnr` index
required by package `solana-turbine v2.3.0 (/solana/turbine)`
couldn't publish 'solana-turbine'

Summary of Changes

Configure agave-xdp to publish

Required to fix CI for #6332

---

This is an automatic backport of pull request #6448 done by [Mergify](https://mergify.com).

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.8%. Comparing base (de54ce0) to head (a10e2a0).

Additional details and impacted files

@@            Coverage Diff            @@
##             v2.3    #6454     +/-   ##
=========================================
- Coverage    82.8%    82.8%   -0.1%     
=========================================
  Files         848      848             
  Lines      379479   379479             
=========================================
- Hits       314550   314473     -77     
- Misses      64929    65006     +77     

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[steviez]

We want crate publishing to work in v2.3 so