Install x86_64-apple-darwin target before building bindings on macos-latest

[charlesbluca]

Looks like we're starting to see failures in our macOS test builds:

https://github.com/dask-contrib/dask-sql/actions/runs/8852325552/job/24312113450?pr=1328

Taking the suggestion from the error logs seems to resolve things:

  = note: the `x86_64-apple-darwin` target may not be installed
  = help: consider downloading the target with `rustup target add x86_64-apple-darwin`

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.74%. Comparing base (b473fd6) to head (7db333d).

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Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1329      +/-   ##
==========================================
- Coverage   85.32%   76.74%   -8.58%     
==========================================
  Files          77       77              
  Lines        4231     4231              
  Branches      791      791              
==========================================
- Hits         3610     3247     -363     
- Misses        453      838     +385     
+ Partials      168      146      -22     

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