Update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/branches-and-prs.yaml

@@ -20,7 +20,7 @@ jobs:
     steps:
     - id: 'step-0'
       name: 'Check out'
-      uses: 'actions/checkout@v4'
+      uses: 'actions/checkout@v6'
     - id: 'step-1'
       name: 'Execute script'
       run: 'rm ''.github/workflows/branches-and-prs.yaml'' && ''.github/workflows/branches-and-prs.main.kts'''

.github/workflows/codeql-analysis.yaml

@@ -21,7 +21,7 @@ jobs:
     steps:
     - id: 'step-0'
       name: 'Check out'
-      uses: 'actions/checkout@v4'
+      uses: 'actions/checkout@v6'
     - id: 'step-1'
       name: 'Execute script'
       run: 'rm ''.github/workflows/codeql-analysis.yaml'' && ''.github/workflows/codeql-analysis.main.kts'''

.github/workflows/docs-pr.yaml

@@ -20,7 +20,7 @@ jobs:
     steps:
     - id: 'step-0'
       name: 'Check out'
-      uses: 'actions/checkout@v4'
+      uses: 'actions/checkout@v6'
     - id: 'step-1'
       name: 'Execute script'
       run: 'rm ''.github/workflows/docs-pr.yaml'' && ''.github/workflows/docs-pr.main.kts'''

.github/workflows/release.yaml

@@ -16,7 +16,7 @@ jobs:
     steps:
     - id: 'step-0'
       name: 'Check out'
-      uses: 'actions/checkout@v4'
+      uses: 'actions/checkout@v6'
     - id: 'step-1'
       name: 'Execute script'
       run: 'rm ''.github/workflows/release.yaml'' && ''.github/workflows/release.main.kts'''