add missing quotes in GitHub actions versions

Author: miguelgrinberg

.github/workflows/daily.yml

@@ -9,7 +9,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          ref: 8.18
+          ref: "8.18"
       - name: Setup node.js
         uses: actions/setup-node@v4
       - name: Install
@@ -29,7 +29,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          ref: 8.18
+          ref: "8.18"
       - name: Setup node.js
         uses: actions/setup-node@v4
       - name: Install
@@ -49,7 +49,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          ref: 8.18
+          ref: "8.18"
       - name: Setup node.js
         uses: actions/setup-node@v4
       - name: Install
@@ -69,7 +69,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          ref: 9.0
+          ref: "9.0"
       - name: Setup node.js
         uses: actions/setup-node@v4
       - name: Install
@@ -89,7 +89,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          ref: 9.0
+          ref: "9.0"
       - name: Setup node.js
         uses: actions/setup-node@v4
       - name: Install
@@ -109,7 +109,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          ref: 9.0
+          ref: "9.0"
       - name: Setup node.js
         uses: actions/setup-node@v4
       - name: Install