ci: stop testing against NodeJS v18

Author: wolfy1339

.github/workflows/test.yml

@@ -26,9 +26,9 @@ jobs:
     strategy:
       matrix:
         node_version:
-          - 18
-          - 20
+          - 20.17
           - 22
+          - 24
     name: Node ${{ matrix.node_version }}
     steps:
       - uses: actions/checkout@v4
@@ -38,7 +38,7 @@ jobs:
           cache: npm
       - run: npm ci
       - run: npm test
-    
+
   test:
     runs-on: ubuntu-latest
     needs: