ci(changelog): add changelog reminder

[mtrezza]

Ensures a PR modifies the CHANGELOG.md file:

Transitional solution until we move to automated releases which will generate the changelog entry.

TODO:

• Add check to required tests for merge in repo settings

[codecov]

Codecov Report

Merging #7512 (597c0f4) into master (a967e79) will increase coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #7512      +/-   ##
==========================================
+ Coverage   93.91%   93.93%   +0.01%     
==========================================
  Files         181      181              
  Lines       13273    13273              
==========================================
+ Hits        12466    12468       +2     
+ Misses        807      805       -2     

Impacted Files	Coverage Δ
src/RestWrite.js	94.10% <0.00%> (+0.15%)	⬆️
src/batch.js	93.10% <0.00%> (+1.72%)	⬆️

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[dblythy]

Good idea!

[parseplatformorg]

🎉 This change has been released in version 5.0.0-beta.1

[parseplatformorg]

🎉 This change has been released in version 5.0.0