chore: remove duplicated security issue choice

[MikeMcC399]

Description

Remove the duplicated entry in .github/ISSUE_TEMPLATE/config.yml:

• Want to report security issues or vulnerabilites?

leaving the entry:

• Report a security vulnerability

which links to the SECURITY document.

Motivation and Context

https://github.com/nodejs/docker-node/issues/new/choose shows two entries in the template chooser for reporting security issues:

1. Report a security vulnerability
2. Want to report security issues or vulnerabilites (sic)?

Both entries link to the same document

• https://github.com/nodejs/docker-node/security/policy

which forwards to:

• https://github.com/nodejs/docker-node/blob/main/SECURITY.md

The first entry "Report a security vulnerability" is added automatically by GitHub, although this appears to be an undocumented feature.

Testing Details

Types of changes

• Documentation
• Version change (Update, remove or add more Node.js versions)
• Variant change (Update, remove or add more variants, or versions of variants)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Other (none of the above)

Checklist

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING.md document.
• All new and existing tests passed.