Fix nightly merge failure

.github/workflows/artifacts.yml

@@ -6,7 +6,7 @@ jobs:
     runs-on: ubuntu-latest
     name: Run CircleCI artifacts redirector
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v4
 
       - name: Get artifact URL
         id: getArtifact

.github/workflows/demo_diff_check.yml

@@ -15,7 +15,7 @@ jobs:
         with:
           access_token: ${{ github.token }}
 
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           ref: dev
 
@@ -84,7 +84,7 @@ jobs:
         with:
           access_token: ${{ github.token }}
 
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           ref: master
 
@@ -147,7 +147,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: [build-dev, build-master]
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
       with:
         # We checkout a dedicated unprotected branch and store the output of
         # the checker there

.github/workflows/deploy-pr.yml

@@ -13,9 +13,9 @@ jobs:
     steps:
       # Needed to Built pennylane.ai-react
       - name: Setup Node
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 20
 
       - name: Download Build Context
         uses: XanaduAI/cloud-actions/download-github-workflow-artifact@main

.github/workflows/update-dev.yml

@@ -26,7 +26,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v1
+        uses: actions/checkout@v4
 
       - name: Nightly Merge
         uses: robotology/[email protected]

.github/workflows/upload-json.yml

@@ -54,7 +54,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           ref: ${{ inputs.branch }}
           fetch-depth: 1

.github/workflows/upload-text.yml

@@ -38,7 +38,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           ref: ${{ inputs.branch }}
           fetch-depth: 1

.github/workflows/validate-demo-metadata.yml

@@ -30,7 +30,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 1
           ref: ${{ inputs.branch }}
@@ -74,7 +74,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 1
           ref: ${{ inputs.branch }}
@@ -113,7 +113,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 1
           ref: ${{ inputs.branch }}