Scope CI workflow to Node 22

.github/workflows/ci.yml

@@ -10,17 +10,12 @@ jobs:
   build:
     runs-on: ubuntu-latest
 
-    strategy:
-      matrix:
-        node-version: [20.x, 21.x, 22.x]
-        # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
-
     steps:
       - uses: actions/checkout@v3
       - name: Use Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v3
         with:
-          node-version: ${{ matrix.node-version }}
+          node-version: 22
           cache: "yarn"
       - run: yarn
       - run: yarn ci