Feature/update eleventy boosted - update CI to Node 20 for Eleventy 3.1.2 (#804)

* chore: update Eleventy to 3.1.2 and Boosted to 5.3.8

* chore: update  CI to Node 20 for Eleventy 3.1.2

---------

Co-authored-by: Mewen Le Hô <[email protected]>

Author: Tydesigner007

.github/workflows/main.yml

@@ -18,7 +18,7 @@ jobs:
       - name: Setup NodeJS
         uses: actions/setup-node@v3
         with:
-          node-version: '16.x'
+          node-version: '20.x'
 
       - name: Install dependencies
         run: npm install