ci: Specify Node version to use

Author: bbfh-dev

.github/workflows/ci.yml

@@ -27,6 +27,9 @@ jobs:
         steps:
             - name: Checkout repository
               uses: actions/checkout@v5
+            - uses: actions/setup-node@v4
+              with:
+                  node-version: 20
             - name: Set up tree-sitter
               uses: tree-sitter/setup-action/cli@v2
             - uses: actions/checkout@v4