Update Stylelint Configuration with Latest Rules

[github-actions]

This PR updates the stylelint configuration to include the latest rules from the most recent version of stylelint.
The focus is on rules that prevent the use of:

• unknown
• deprecated
• invalid
• vendor-prefixed
• empty
• non-standard
• important declarations

Specifically done by including all rules where name contains any followed:

• rule name include 'no-unknown'
• rule name include 'no-deprecated'
• rule name include 'no-invalid'
• rule name include 'no-vendor'
• rule name include 'no-empty'
• rule name include 'no-nonstandard'
• rule name include 'no-important'

Following files may be touched:

• configurations/standard.json