Fix pathLooksLikeCode to exclude build folder

[smaifullerton-wk]

Motivation

Codemods run on the build/ folder after the package is built. Not only do we not want to do this, it can cause generatePatches() to throw an exception here and the codemod will fail: https://github.com/Workiva/dart_codemod/blob/master/lib/src/suggestors.dart#L191

Changes

Exclude paths starting with build/ from the "looking like code" filter.

Release Notes

Review

See CONTRIBUTING.md for more details on review types (+1 / QA +1 / +10) and code review process.

Please review:

QA Checklist

• CI passes

Merge Checklist

While we perform many automated checks before auto-merging, some manual checks are needed:

• A Client Platform member has reviewed these changes
• There are no unaddressed comments - this check can be automated if reviewers use the "Request Changes" feature
• For release PRs - Version metadata in Rosie comment is correct

[aviary2-wf]

Security Insights

No security relevant content was detected by automated scans.

Action Items

• Review PR for security impact; comment "security review required" if needed or unsure
• Verify aviary.yaml coverage of security relevant code

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[georgelesica-wf]

QA +1

[georgelesica-wf]

+1

[georgelesica-wf]

@Workiva/release-management-p