Add pre-commit hook for yaml formatting

[gab-arrobo]

No description provided.

[Copilot]

Pull request overview

Adds YAML auto-formatting to the repository’s pre-commit checks and applies consistent formatting to existing YAML files (primarily removing whitespace-only blank lines and normalizing indentation) to match the formatter output.

Changes:

• Add a yamlfmt pre-commit hook (google/yamlfmt).
• Reformat YAML files across test configs, GitHub workflows, golangci config, and dependabot config to a consistent style.
• Normalize list indentation in the subscriptions section of test_nssf_config.yaml.

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
test/conf/test_nssf_config.yaml	Reformats YAML and normalizes subscriptions list indentation.
test/conf/test_nssf_config_with_custom_webui_url.yaml	Removes whitespace-only blank lines for consistent YAML formatting.
.pre-commit-config.yaml	Adds yamlfmt hook and normalizes YAML indentation throughout the config.
.golangci.yml	Removes whitespace-only blank line for consistent YAML formatting.
.github/workflows/stale.yml	Removes whitespace-only blank lines for consistent YAML formatting.
.github/workflows/push.yml	Removes whitespace-only blank lines for consistent YAML formatting.
.github/workflows/main.yml	Removes whitespace-only blank lines for consistent YAML formatting.
.github/dependabot.yml	Removes whitespace-only blank lines for consistent YAML formatting.

---

💡 Add a code-review agent skill or configure MCP servers for context-aware, tailored reviews. Learn more in the docs.