Do not use --production flag anymore

[melroy89]

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• I have read and understand the pull request rules.

Description

Please, try to use the new --omit flag of npm instead of the outdated/invalid: --production: https://docs.npmjs.com/cli/v11/commands/npm-install#omit

Type of change

Please delete any options that are not relevant.

• Bug fix (non-breaking change which fixes an issue, hopefully? Unless you really want to keep using npm v1).

Checklist

• My code follows the style guidelines of this project
• I ran ESLint and other linters for modified files
• I have performed a self-review of my own code and tested it
• I have commented my code, particularly in hard-to-understand areas (including JSDoc for methods)
• My changes generates no new warnings
• My code needed automated testing. I have added them (this is optional task)

Screenshots (if any)

Before I got warnings:

HEAD is now at 32dc76a0 Update to 1.23.15
npm warn config production Use `--omit=dev` instead.