ci: bump prettier.yml — Node 18→24, checkout v4→v6, setup-node v4→v6

Author: ggreif

.github/workflows/prettier.yml

@@ -14,11 +14,11 @@ jobs:
       fail-fast: true
       matrix:
         os: [ubuntu-24.04]
-        node: [18]
+        node: [24]
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - name: Use Node.js ${{ matrix.node }}
-        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
+        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
           node-version: ${{ matrix.node }}
       - run: npm install -g npm