Chore. Updated 11ty packages.

- Eleventy 3.1.1
- Eleventy Fetch 5.1.0
- Eleventy Image 6.0.4
- Eleventy Plugin 2.0.4
- Eleventy Syntax Highlight 5.0.1
- Playwright Test 1.53.1
- Concurrently 9.1.2
- Node Fetch 3.3.2 (missing dependency)
- Simple Git 3.28.0
- YAML 2.8.0

Author: davidwesst