chore(deps): update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/backport.yml

@@ -22,7 +22,7 @@ jobs:
     if: github.event.pull_request.merged
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Open Backport PR
         uses: korthout/backport-action@v1

.github/workflows/ci.yml

@@ -40,7 +40,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           submodules: true
 
@@ -84,7 +84,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           submodules: true
 
@@ -131,7 +131,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           submodules: true
 
@@ -199,7 +199,7 @@ jobs:
           password: ${{ secrets.UPBOUND_MARKETPLACE_PUSH_ROBOT_PSW }}
 
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           submodules: true
 

.github/workflows/codeql.yml

@@ -33,7 +33,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           submodules: true
 

.github/workflows/commands.yml

@@ -80,7 +80,7 @@ jobs:
         permission-level: write
 
     - name: Checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
 
     - name: Open Backport PR
       uses: korthout/backport-action@v1

.github/workflows/promote.yml

@@ -24,7 +24,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           submodules: true
 

.github/workflows/tag.yml

@@ -16,7 +16,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Create Tag
         uses: negz/create-tag@v1