chore: replace broken kutt.to shortlinks with direct Google Slides URLs for sponsoring packages

[Copilot]

The kutt.to URL shortener is experiencing issues, breaking the sponsoring package download links on both the FR and EN pages.

Changes

• sponsoring/fr.ts & sponsoring/en.ts: Replaced both kutt.to shortlinks with direct Google Slides URLs:
  • kutt.to/sponsors-fr → FR Google Slides presentation
  • kutt.to/sponsors-en → EN Google Slides presentation

// Before
href: 'https://kutt.to/sponsors-fr'
href: 'https://kutt.to/sponsors-en'

// After
href: 'https://docs.google.com/presentation/d/1iq1g1LMoeMhXc8MDdV0ZOD9-w_ru9HxQT0CwFxZhTh4/edit?usp=sharing'
href: 'https://docs.google.com/presentation/d/1HU_xxh5R3BMm121SR7qwKqWa8MsSlqW3Z7e_mofXX9Q/edit?usp=sharing'

[github-actions]

Hi, thank you for creating your PR, we will check it out very soon

[github-actions]

Code Coverage Report

Coverage Results

Test Results

Status	Count
✅ Passed	72
❌ Failed	0
⏭️ Skipped	0
Total	72

✅ Pass Rate: 100.0%

Coverage

Metric	Covered	Total	Percentage
Lines	483	509	94.89%
Branches	379	450	84.22%
Functions	118	120	98.33%

Overall: 94.89% 🟢
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