chore(deps): update actions/checkout action to v5

Author: renovate[bot]

.github/workflows/init.yml

@@ -35,10 +35,10 @@ jobs:
   init:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           path: renovate-config
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           repository: bettermarks/${{ inputs.repository}}
           path: ${{ inputs.repository }}

.github/workflows/main.yml

@@ -8,7 +8,7 @@ jobs:
   validate:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       # validate every configuration preset
       - uses: bettermarks/renovate-config/validator@main
         with:

.github/workflows/renovate-config-validator.yml

@@ -8,5 +8,5 @@ jobs:
   renovate-config-validator:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: bettermarks/renovate-config/validator@main