Bump @11ty/eleventy from 3.1.2 to 3.1.5 (#165)

Bumps [@11ty/eleventy](https://github.com/11ty/eleventy) from 3.1.2 to 3.1.5.
- [Release notes](https://github.com/11ty/eleventy/releases)
- [Changelog](https://github.com/11ty/eleventy/blob/main/docs/release-instructions.md)
- [Commits](11ty/eleventy@v3.1.2...v3.1.5)

---
updated-dependencies:
- dependency-name: "@11ty/eleventy"
  dependency-version: 3.1.5
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package-lock.json

@@ -2,7 +2,7 @@
   "name": "web-docs-backlog",
   "description": "Backlog for web platform docs",
   "devDependencies": {
-    "@11ty/eleventy": "3.1.2",
+    "@11ty/eleventy": "3.1.5",
     "@mdn/browser-compat-data": "^7.3.7",
     "compute-baseline": "^0.4.0",
     "patch-package": "^8.0.1"