The Dismiss low impact issues for development-scoped dependencies rule is a GitHub preset that auto-dismisses certain types of vulnerabilities that are found in npm dependencies used in development. For more information about the rule, see About Dependabot auto-triage rules.
This rule is enabled by default on public repositories and disabled for private repositories. Administrators of private repositories can opt in by enabling the rule for their repository.
Enabling the Dismiss low impact issues for development-scoped dependencies rule for your private repository
You first need to enable Dependabot alerts for the repository. For more information, see Configuring Dependabot alerts.
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On GitHub, navigate to the main page of the repository.
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Under your repository name, click Settings. If you cannot see the "Settings" tab, select the dropdown menu, then click Settings.

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In the "Security" section of the sidebar, click Advanced Security.
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Under "Dependabot alerts", click close to "Dependabot rules".

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Under "GitHub presets", to the right of "Dismiss low impact issues for development-scoped dependencies", click .
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Under "State", select the dropdown menu, then click "Enabled".
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Click Save rule.