fix: includeKeys when fetching pointer

[cbaker6]

New Pull Request Checklist

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

Issue Description

Approach

TODOs before merging

• Add entry to changelog

[codecov]

Codecov Report

Merging #133 (d5baf44) into main (eeb2704) will decrease coverage by 0.01%.
The diff coverage is 86.66%.

@@            Coverage Diff             @@
##             main     #133      +/-   ##
==========================================
- Coverage   91.33%   91.33%   -0.01%     
==========================================
  Files         175      175              
  Lines       15457    15466       +9     
==========================================
+ Hits        14118    14126       +8     
- Misses       1339     1340       +1     

Files Changed	Coverage Δ
...urces/ParseSwift/API/API+NonParseBodyCommand.swift	80.00% <0.00%> (ø)
Sources/ParseSwift/Coding/ParseCoding.swift	90.90% <ø> (ø)
Sources/ParseSwift/Types/Pointer.swift	98.21% <92.85%> (-1.79%)	⬇️