chore: Add Node.js 24 to workflows. Remove Node 18

Author: javierbrea

.github/workflows/build.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node: ["18.20.2", "20.13.1", "22.2.0"]
+        node: ["20.13.1", "22.2.0", "24.4.1"]
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -76,7 +76,7 @@ jobs:
       - name: Download test results
         uses: actions/download-artifact@v4
         with:
-          name: coverage-18.20.2
+          name: coverage-22.2.0
           path: coverage
       - name: Coveralls
         uses: coverallsapp/github-action@master