Fix struct test and fix warnings · edgurgel/mimic@f9d2f5b

Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/[email protected]. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

negative steps are not supported in Enum.slice/2, pass 11..-1//1 instead

negative steps are not supported in Enum.slice/2, pass 49..-1//1 instead

negative steps are not supported in Enum.slice/2, pass 36..-1//1 instead

negative steps are not supported in String.slice/2, pass 67..-1//1 instead

negative steps are not supported in Enum.slice/2, pass 49..-1//1 instead

negative steps are not supported in Enum.slice/2, pass 56..-1//1 instead

negative steps are not supported in Enum.slice/2, pass 60..-1//1 instead

negative steps are not supported in Enum.slice/2, pass 36..-1//1 instead

negative steps are not supported in Enum.slice/2, pass 56..-1//1 instead

The `save-state` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

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