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

Author: homarr-renovate[bot]

.github/workflows/argos.yml

@@ -14,7 +14,7 @@ jobs:
         node-version: [24]
     steps:
       - name: Check out repository code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - uses: pnpm/action-setup@v2
       - name: Use Node.js
         uses: actions/setup-node@v5

.github/workflows/build.yaml

@@ -28,7 +28,7 @@ jobs:
       contents: read
       pull-requests: write
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: pnpm/action-setup@v2
       - name: Use Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v5

.github/workflows/dump-api-data.yaml

@@ -20,7 +20,7 @@ jobs:
       matrix:
         node-version: [24]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: pnpm/action-setup@v2
       - name: Use Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v5

.github/workflows/release.yaml

@@ -20,7 +20,7 @@ jobs:
           private_key: ${{ secrets.HOMARR_DOCS_RELEASE_APP_PRIVATE_KEY }}
           app_id: ${{ vars.HOMARR_DOCS_RELEASE_APP_ID }}
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           token: ${{ steps.obtainToken.outputs.token }}
       - uses: pnpm/action-setup@v4

.github/workflows/update-homarr-openapi.yaml

@@ -16,7 +16,7 @@ jobs:
       matrix:
         node-version: [24]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         name: "Checkout app source repository"
         with:
           repository: homarr-labs/homarr
@@ -64,7 +64,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: start-homarr-and-export-api-spec
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         name: "Checkout documentation source repository"
         with:
           repository: homarr-labs/documentation