eslint is outdated

[erossignon]

The version of eslitn causes warnings that suggest we need to upgrade

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WARNING: You are currently running a version of TypeScript which is not officially supported by @typescript-eslint/typescript-estree.

You may find that it works just fine, or you may not.

SUPPORTED TYPESCRIPT VERSIONS: >=4.3.5 <5.4.0

YOUR TYPESCRIPT VERSION: 5.8.3

Please only submit bug reports when using the officially supported version.

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[danielpeintner]

resolved by #1424