Update the changelog to version 1.7.12

[juarezr]

This PR has the objective of updating the changelog to version 1.7.12

Changes

1. Update the changelog to version 1.7.12
2. Previously was mistakenly 1.7.13...

Checklist

Use this checklist to ensure the quality of pull requests that include new code and/or make changes to existing code.

• [X] Versioning and history tracking guidelines:
  • [X] Using atomic commits whenever possible
  • [X] Commits are reversible whenever possible
• [ ] State of these changes is:
  • [ ] Just a proof of concept
  • [ ] Work in progress / Further changes needed
  • [X] Ready to review
  • [X] Ready to merge

[coveralls]

Pull Request Test Coverage Report for Build 3534725092

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 91.116%

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Totals
Change from base Build 3534583421:	0.0%
Covered Lines:	12758
Relevant Lines:	14002

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💛 - Coveralls