Move daily integration test run to 8.16 branch

Author: miguelgrinberg

.github/workflows/daily.yml

@@ -9,7 +9,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          ref: 8.15
+          ref: 8.16
       - name: Setup node.js
         uses: actions/setup-node@v4
       - name: Install
@@ -29,7 +29,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          ref: 8.15
+          ref: 8.16
       - name: Setup node.js
         uses: actions/setup-node@v4
       - name: Install
@@ -49,7 +49,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          ref: 8.15
+          ref: 8.16
       - name: Setup node.js
         uses: actions/setup-node@v4
       - name: Install