build(deps): bump actions/checkout from 5 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 5 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v5...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/auto-release.yml

@@ -23,7 +23,7 @@ jobs:
       
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 2  # Need to compare with previous commit
           

.github/workflows/calver-automation.yml

@@ -30,7 +30,7 @@ jobs:
     
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           token: ${{ secrets.RELEASE_PLEASE_TOKEN || secrets.GITHUB_TOKEN }}
           fetch-depth: 0  # Need full history for changelog

.github/workflows/ci.yml

@@ -20,7 +20,7 @@ jobs:
       packages: write
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       # ─────── Generate uv.lock for reproducible builds ───────
       - name: Set up Python

.github/workflows/create-release.yml

@@ -17,7 +17,7 @@ jobs:
       
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           token: ${{ secrets.RELEASE_PLEASE_TOKEN || secrets.GITHUB_TOKEN }}
           fetch-depth: 0

.github/workflows/i18n-template.yml

@@ -11,7 +11,7 @@ jobs:
     # don’t run if the commit came from the Weblate bot
     if: github.actor != 'weblate'
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Install uv
         uses: astral-sh/setup-uv@v7

.github/workflows/pr-test.yml

@@ -10,7 +10,7 @@ jobs:
     if: github.actor != 'weblate'
     
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     
     - name: Install uv
       uses: astral-sh/setup-uv@v7

.github/workflows/publish-manifest.yml

@@ -17,7 +17,7 @@ jobs:
       # -----------------------------------------------------------
       # Grab the source *and* every tag so we can look up the latest.
       # -----------------------------------------------------------
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0           # ← crucial for git describe
 

.github/workflows/pytest.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: blacksmith-2vcpu-ubuntu-2404
     if: github.actor != 'weblate'
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
 
     - name: Install uv
       uses: astral-sh/setup-uv@v7

.github/workflows/release.yml

@@ -23,7 +23,7 @@ jobs:
             packages: write
         
         steps:
-            -   uses: actions/checkout@v5
+            -   uses: actions/checkout@v6
 
             # ─────── Generate uv.lock for reproducible builds ───────
             -   name: Set up Python

.github/workflows/verify-translations.yml

@@ -10,7 +10,7 @@ jobs:
   compile:
     runs-on: blacksmith-2vcpu-ubuntu-2404
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Compile .mo
         run: |
           pipx run babel pybabel compile -d app/translations