Cut 0.2-rc1

[TheBlueMatt]

Based on #4193, bumps the version numbers.

[ldk-reviews-bot]

I've assigned @joostjager as a reviewer!
I'll wait for their review and will help manage the review process.
Once they submit their review, I'll check if a second reviewer would be helpful.

[TheBlueMatt]

This is trivial, so just gonna land it, but as its a release PR, gonna wait for all the CI to green.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.85%. Comparing base (ef789f4) to head (e6b1c04).
⚠️ Report is 2 commits behind head on 0.2.

Additional details and impacted files

@@            Coverage Diff             @@
##              0.2    #4194      +/-   ##
==========================================
- Coverage   88.87%   88.85%   -0.02%     
==========================================
  Files         180      180              
  Lines      137802   137802              
  Branches   137802   137802              
==========================================
- Hits       122465   122442      -23     
- Misses      12524    12550      +26     
+ Partials     2813     2810       -3     

Flag	Coverage Δ
fuzzing	20.86% <ø> (-0.59%)	⬇️
tests	88.69% <ø> (-0.02%)	⬇️

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[TheBlueMatt]

🤷‍♂️ it passed at https://github.com/lightningdevkit/rust-lightning/actions/runs/18956408862/job/54134272467