chore(deps-dev): bump @11ty/eleventy-img from 3.1.6 to 3.1.8

Bumps [@11ty/eleventy-img](https://github.com/11ty/eleventy-img) from 3.1.6 to 3.1.8.
- [Release notes](https://github.com/11ty/eleventy-img/releases)
- [Commits](https://github.com/11ty/eleventy-img/compare/v3.1.6...v3.1.8)

---
updated-dependencies:
- dependency-name: "@11ty/eleventy-img"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -21,7 +21,7 @@
     "@11ty/eleventy": "^2.0.1",
     "@11ty/eleventy-activity-feed": "^1.0.9",
     "@11ty/eleventy-fetch": "^4.0.0",
-    "@11ty/eleventy-img": "^3.1.6",
+    "@11ty/eleventy-img": "^3.1.8",
     "@11ty/eleventy-plugin-rss": "^1.2.0",
     "@11ty/eleventy-plugin-syntaxhighlight": "^5.0.0",
     "@catppuccin/tailwindcss": "^0.1.6",