⬆️ Upgrade actions/checkout action to v6 (#563)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

.github/workflows/Release.yml

@@ -12,7 +12,7 @@ jobs:
       id-token: write
       contents: write
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - uses: astral-sh/setup-uv@v6
         name: Setup UV

.github/workflows/Test.yml

@@ -25,7 +25,7 @@ jobs:
       PYTHON_VERSION: ${{ matrix.python-version }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Setup uv
         uses: astral-sh/setup-uv@v6

.github/workflows/TypeCheck.yml

@@ -7,7 +7,7 @@ jobs:
   TypeCheck:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - uses: astral-sh/setup-uv@v6
         name: Setup UV

.github/workflows/codeql-analysis.yml

@@ -38,7 +38,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       # Initializes the CodeQL tools for scanning.
       - name: Initialize CodeQL