feat(action): bump actions/checkout from 5 to 6 (#12)

BREAKING CHANGE: bump `actions/checkout` from 5 to 6

Author: dependabot[bot]

.github/workflows/release-please.yml

@@ -31,7 +31,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Configure Git user
         run: |

.github/workflows/test.yml

@@ -10,7 +10,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 

action.yml

@@ -28,7 +28,7 @@ runs:
   steps:
     - name: Checkout repository
       if: inputs.checkout == 'true'
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         fetch-depth: 0