ci: bump major version of actions checkout

[cbaker6]

New Pull Request Checklist

• [x] I am not disclosing a vulnerability.
• [x] I am creating this PR in reference to an issue.

Issue Description

GitHub actions checkout is currently not running on the latest version along with Xcode

Related issue: #n/a

Approach

Bump major version of actions checkout and minor version of Xcode in CI

TODOs before merging

[parse-github-assistant[bot]]

Thanks for opening this pull request!

• 🎉 We are excited about your hands-on contribution!

[codecov[bot]]

Codecov Report

Merging #361 (ce165e5) into main (c57fc2e) will increase coverage by 0.03%. The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #361      +/-   ##
==========================================
+ Coverage   87.93%   87.96%   +0.03%     
==========================================
  Files         114      114              
  Lines       12198    12198              
==========================================
+ Hits        10726    10730       +4     
+ Misses       1472     1468       -4     

Impacted Files	Coverage Δ
Sources/ParseSwift/LiveQuery/ParseLiveQuery.swift	76.58% <0.00%> (+0.58%)	:arrow_up:

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