chore(deps): bump actions/checkout from v5 to v6

Signed-off-by: Lucas Larson <LucasLarson@riseup.net>

Author: renovate[bot]

.github/workflows/changelog.yml

@@ -19,7 +19,7 @@ jobs:
     timeout-minutes: 4
     if: ${{ !contains(github.event.head_commit.message, 'update changelog') }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           persist-credentials: false
       - name: Set up Ruby

.github/workflows/super-linter.yml

@@ -46,7 +46,7 @@ jobs:
       # Checkout the code base #
       ##########################
       - name: Checkout Code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           # Super-Linter requires full repository history for analysis
           fetch-depth: 0