Fix SC2086 shellcheck warnings in super-linter workflow

[Copilot]

Three unquoted $GITHUB_OUTPUT variable references in the super-linter workflow triggered SC2086 warnings about missing quotes to prevent globbing and word splitting.

Changes

• Added double quotes around $GITHUB_OUTPUT in the "Check for linting issues" step (3 instances)

- echo "needs-linting=true" >> $GITHUB_OUTPUT
+ echo "needs-linting=true" >> "$GITHUB_OUTPUT"

Fixes #3554

Original prompt

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This section details on the original issue you should resolve

<issue_title>[task] Fix SC2086 missing quotes in super-linter workflow</issue_title>
<issue_description>## 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</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes [task] Fix SC2086 missing quotes in super-linter workflow #3542

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[Copilot]

Pull Request Overview

This PR addresses SC2086 shellcheck warnings by adding proper double quotes around $GITHUB_OUTPUT variable references in the super-linter workflow. The fix prevents potential issues with globbing and word splitting when the variable is expanded, aligning with shell scripting best practices and the project's security guidelines.

Key Changes:

• Added double quotes around 3 instances of $GITHUB_OUTPUT variable references in the "Check for linting issues" step
• Applied the same fix to both the source workflow file (.md) and the compiled lock file (.lock.yml)

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
.github/workflows/super-linter.md	Added quotes around $GITHUB_OUTPUT on lines 53, 55, and 58 to prevent globbing and word splitting
.github/workflows/super-linter.lock.yml	Applied identical quoting fixes to the compiled workflow on lines 4544, 4546, and 4549

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