chore: run CI tests on Node 20 (#8519)

Author: benmccann

.github/workflows/ci.yml

@@ -22,6 +22,8 @@ jobs:
             os: ubuntu-latest
           - node-version: 18
             os: ubuntu-latest
+          - node-version: 20
+            os: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
       - uses: pnpm/[email protected]
@@ -60,6 +62,8 @@ jobs:
             os: ubuntu-latest
           - node-version: 18
             os: ubuntu-latest
+          - node-version: 20
+            os: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
       - uses: pnpm/[email protected]