Sweep: Remove x-hack from shellcheck script

[sweep-nightly[bot]]

• In lib/tools/shellcheck.sh, identify all instances of the 'x-hack' and replace them with a more modern approach.
• Test the script to ensure it still works as expected after making the changes.

Parent issue: #11

Checklist

- [X] `lib/tools/shellcheck.sh` ❌ Failed

• No changes are needed as 'x-hack' is not found in the script.

[sweep-nightly[bot]]

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Actions (click)

• [ ] ↻ Restart Sweep

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File Path	Proposed Changes
lib/tools/shellcheck.sh	Modify lib/tools/shellcheck.sh with contents: • No changes are needed as 'x-hack' is not found in the script.

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