Bump actions/checkout from 5 to 6

.github/workflows/build-images.yml

@@ -180,7 +180,7 @@ jobs:
       # https://github.com/actions/checkout
       - 
         name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           ref: '${{ inputs.ref }}'
 

.github/workflows/ci.yml

@@ -105,7 +105,7 @@ jobs:
       # https://github.com/actions/checkout
       - 
         name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           ref: '${{ inputs.ref }}'
 

.github/workflows/clean-cache.yml

@@ -37,7 +37,7 @@ jobs:
       # https://github.com/actions/checkout
       - 
         name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       # Necessary if testing locally with 'act'
       # https://github.com/nektos/act

.github/workflows/e2e-tests.yml

@@ -89,7 +89,7 @@ jobs:
       # Checkout a repository, so the workflow can access it
       # https://github.com/actions/checkout
       - 
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - 
         name: Launch the application

.github/workflows/lint-files.yml

@@ -55,7 +55,7 @@ jobs:
       # https://github.com/actions/checkout
       - 
         name: Checkout repository (no ref input)
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         if: ${{ inputs.ref == '' }}
         with:
           # Full git history is needed to get a proper
@@ -64,7 +64,7 @@ jobs:
 
       - 
         name: Checkout repository (with ref input)
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         if: ${{ inputs.ref != '' }}
         with:
           ref: '${{ inputs.ref }}'

.github/workflows/lint-images.yml

@@ -104,7 +104,7 @@ jobs:
       # https://github.com/actions/checkout
       - 
         name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       # Create and boot a builder that can be used in the following steps of
       # the workflow

.github/workflows/read-matrix.yml

@@ -62,7 +62,7 @@ jobs:
       # https://github.com/actions/checkout
       - 
         name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       # Setting output parameters between steps, jobs and/or workflows
       # https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#setting-an-output-parameter