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

[nicomiguelino]

Description

Bumps actions/checkout to v6 across all workflow files (16 references in 12 files).

The key change in v6 is that credentials are stored under $RUNNER_TEMP via includeIf git config directives instead of directly in .git/config. This is transparent for most workflows.

Risk Assessment

Workflow	Risk
javascript-lint.yaml	None
python-lint.yaml	None
lint-workflows.yml	None
test-runner.yml	None
generate-openapi-schema.yml	None
codeql-analysis.yaml	None
deploy-website.yaml	None
docker-build.yaml	None
build-balena-disk-image.yaml	None
build-webview.yaml	None
sbom.yaml	Low — sbomify/github-action@master may be a Docker container action, but does not require git credentials post-checkout
ansible-lint.yaml	Low — ansible-community/ansible-lint-action@main is likely Docker-based, but only needs checked-out files

Checklist

• I have performed a self-review of my own code.
• New and existing unit tests pass locally and on CI with my changes.
• I have done an end-to-end test for Raspberry Pi devices.
• I have tested my changes for x86 devices.
• I added a documentation for the changes I have made (when necessary).

[Copilot]

Pull request overview

This PR updates the GitHub Actions workflows to use actions/checkout@v6 everywhere, aligning all CI/CD entrypoints on the same checkout implementation.

Changes:

• Bump actions/checkout from v5 to v6 across all workflow files.
• Update all checkout steps consistently (16 references across 12 workflows).

Reviewed changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
.github/workflows/test-runner.yml	Update checkout action to actions/checkout@v6 for the reusable test workflow.
.github/workflows/sbom.yaml	Update checkout action to actions/checkout@v6 in both SBOM jobs.
.github/workflows/python-lint.yaml	Update checkout action to actions/checkout@v6 for Python lint job.
.github/workflows/lint-workflows.yml	Update checkout action to actions/checkout@v6 for workflow linting job.
.github/workflows/javascript-lint.yaml	Update checkout action to actions/checkout@v6 for JS lint job.
.github/workflows/generate-openapi-schema.yml	Update checkout action to actions/checkout@v6 for schema generation job.
.github/workflows/docker-build.yaml	Update checkout action to actions/checkout@v6 in both build matrix and balena jobs.
.github/workflows/deploy-website.yaml	Update checkout action to actions/checkout@v6 for Pages build job.
.github/workflows/codeql-analysis.yaml	Update checkout action to actions/checkout@v6 for CodeQL analysis job.
.github/workflows/build-webview.yaml	Update checkout action to actions/checkout@v6 in all webview build jobs.
.github/workflows/build-balena-disk-image.yaml	Update checkout action to actions/checkout@v6 for disk image build job.
.github/workflows/ansible-lint.yaml	Update checkout action to actions/checkout@v6 for ansible-lint job.

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud