ci: do not use outdated node 18 icky old junk node

Author: isaacs

.github/workflows/benchmark.yml

@@ -6,7 +6,7 @@ jobs:
   build:
     strategy:
       matrix:
-        node-version: [18.x, 20.x, 22.x]
+        node-version: [20.x, 22.x]
         platform:
           - os: ubuntu-latest
             shell: bash

.github/workflows/typedoc.yml

@@ -33,7 +33,7 @@ jobs:
       - name: Use Nodejs ${{ matrix.node-version }}
         uses: actions/setup-node@v4
         with:
-          node-version: 18.x
+          node-version: 22.x
       - name: Install dependencies
         run: npm install
       - name: Generate typedocs