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

Author: renovate[bot]

.github/workflows/danger.yml

@@ -11,7 +11,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Cache node modules
         uses: actions/cache@v4

.github/workflows/release.yml

@@ -16,7 +16,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Cache node modules
         uses: actions/cache@v4

.github/workflows/test.yml

@@ -23,7 +23,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Cache node modules
         uses: actions/cache@v4