Update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/ci.yml

@@ -23,7 +23,7 @@ jobs:
       INVOKE_PARSER_LOCAL: "True"
     steps:
       - name: "Check out repository code"
-        uses: "actions/checkout@v4"
+        uses: "actions/checkout@v6"
       - name: "Setup environment"
         uses: "networktocode/gh-action-setup-poetry-environment@v6"
         with:
@@ -36,7 +36,7 @@ jobs:
       INVOKE_PARSER_LOCAL: "True"
     steps:
       - name: "Check out repository code"
-        uses: "actions/checkout@v4"
+        uses: "actions/checkout@v6"
       - name: "Setup environment"
         uses: "networktocode/gh-action-setup-poetry-environment@v6"
         with:
@@ -63,7 +63,7 @@ jobs:
       INVOKE_PARSER_LOCAL: "True"
     steps:
       - name: "Check out repository code"
-        uses: "actions/checkout@v4"
+        uses: "actions/checkout@v6"
       - name: "Setup environment"
         uses: "networktocode/gh-action-setup-poetry-environment@v6"
         with:
@@ -80,7 +80,7 @@ jobs:
       INVOKE_PARSER_LOCAL: "True"
     steps:
       - name: "Check out repository code"
-        uses: "actions/checkout@v4"
+        uses: "actions/checkout@v6"
       - name: "Setup environment"
         uses: "networktocode/gh-action-setup-poetry-environment@v6"
         with:
@@ -100,7 +100,7 @@ jobs:
       PYTHON_VER: "${{ matrix.python-version }}"
     steps:
       - name: "Check out repository code"
-        uses: "actions/checkout@v4"
+        uses: "actions/checkout@v6"
       - name: "Setup environment"
         uses: "networktocode/gh-action-setup-poetry-environment@v6"
       - name: "Get image version"
@@ -137,7 +137,7 @@ jobs:
       PYTHON_VER: "${{ matrix.python-version }}"
     steps:
       - name: "Check out repository code"
-        uses: "actions/checkout@v4"
+        uses: "actions/checkout@v6"
       - name: "Setup environment"
         uses: "networktocode/gh-action-setup-poetry-environment@v6"
       - name: "Get image version"
@@ -171,7 +171,7 @@ jobs:
     if: startsWith(github.ref, 'refs/tags/v')
     steps:
       - name: "Check out repository code"
-        uses: "actions/checkout@v4"
+        uses: "actions/checkout@v6"
       - name: "Set up Python"
         uses: "actions/setup-python@v5"
         with:
@@ -199,7 +199,7 @@ jobs:
     runs-on: "ubuntu-22.04"
     steps:
       - name: "Check out repository code"
-        uses: "actions/checkout@v4"
+        uses: "actions/checkout@v6"
         with:
           fetch-depth: "0"
       - name: "Setup environment"
@@ -217,7 +217,7 @@ jobs:
     if: startsWith(github.ref, 'refs/tags/v')
     steps:
       - name: "Check out repository code"
-        uses: "actions/checkout@v4"
+        uses: "actions/checkout@v6"
       - name: "Set up Python"
         uses: "actions/setup-python@v5"
         with: