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

Author: renovate[bot]

.github/workflows/quality.yml

@@ -22,7 +22,7 @@ jobs:
 
     steps:
       - name: Checkout the codebase current state
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install the base dependencies
         run: python3 -m pip install --upgrade poetry tox

.github/workflows/tests.yml

@@ -22,7 +22,7 @@ jobs:
 
     steps:
       - name: Checkout the codebase current state
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install the base dependencies
         run: python3 -m pip install --upgrade poetry tox