fix: PRSDM-7079 Fix resources.ToCSS was deprecated

[christopherbrunsdon]

Description

Fix resources.ToCSS was deprecated that Hugo 0.140.0 raises

The latest Hugo version has a breaking deprecation, this impacts all users running hugo serve after the latest update.

• Tested against Hugo 0.133.1

Issue

• PRSDM-7079

Screenshots

PR Readiness Checks

• Your PR title conforms to conventional commits <type>: <jira-ticket-num><title>, for example: fix: PRSDM-123 issue with login with a maximum of 100 characters
• You have performed a self-review of your changes via the GitHub UI
• Comments were added to new code that can not explain itself (see reference 1 and reference 2)
• New code adheres to the following quality standards:
  • Function Length (see reference)
  • Meaningful Names (see reference)
  • DRY (see reference)
  • YAGNI (see reference)