CompatHelper: add new compat entry for "Optim" at version "1.3"

[github-actions[bot]]

This pull request sets the compat entry for the Optim package to 1.3.

This is a brand new compat entry. Previously, you did not have a compat entry for the Optim package.

Note: I have not tested your package with this new compat entry. It is your responsibility to make sure that your package tests pass before you merge this pull request. Note: Consider tagging a patch release immediately after merging this PR, as downstream packages may depend on this for tests to pass.

[coveralls]

Pull Request Test Coverage Report for Build 34

• 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 100.0%

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Totals
Change from base Build 31:	0.0%
Covered Lines:	21
Relevant Lines:	21

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💛 - Coveralls