chore: fix eslint invalid ecmaVersion value

[Shinigami92]

Description

The configured parserOptions.ecmaVersion value is not known / invalid.
This results in false-positive reports.

Additional context

#5021
eslint/eslint#15022 (comment)

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

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• Read the Contributing Guidelines.
• Read the Pull Request Guidelines and follow the Commit Convention.
• Check that there isn't already a PR that solves the problem the same way to avoid creating a duplicate.
• Provide a description in this PR that addresses what the PR is solving, or reference the issue that it solves (e.g. fixes #123).
• Ideally, include relevant tests that fail without this PR but pass with it.

[sodatea]

Forgot that we are using the typescript-eslint parser 😂
I only checked that the default eslint parser supports this value.

[ygj6]

My fault, I just check the eslint document and thought it had latest value. Also, I didn't get the error hint on my IDE. 😥

[patak-dev]

Dont worry, we also reviewed the PR and missed this