[task] Fix SC2086 missing quotes in super-linter workflow

[github-actions]

Objective

Review and fix variable quoting issues in the super-linter workflow to address 3 SC2086 shellcheck warnings.

Context

Static analysis identified 3 instances of SC2086 ("Double quote to prevent globbing and word splitting") in the super-linter workflow. This is a minor code quality issue that could lead to unexpected behavior with filenames containing spaces or glob characters.

Related to discussion #3527.

Approach

1. Review the super-linter workflow markdown file (.github/workflows/super-linter.md)
2. Identify unquoted variable references in shell commands
3. Add double quotes around variable expansions (e.g., change $VAR to "$VAR")
4. Test the workflow to ensure quoting doesn't break functionality

Files to Modify

• .github/workflows/super-linter.md

Acceptance Criteria

• All variable references properly quoted
• Run gh aw compile super-linter successfully
• Run gh aw compile super-linter --actionlint shows no SC2086 warnings
• Workflow functionality unchanged (test by running workflow if possible)

Impact

Improves code robustness and eliminates 3 linting warnings.
Related to #3527

AI generated by Plan Command for discussion #3527