fix: update netcore31.spec.ts

[kanikaul-amazon]

Issue #, if available:

Description of changes:

Testing done:

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[aws-porting-assistant-bot]

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• CodeBuild project: PortingAssistantBuild-dev
• Commit ID: b16cfeee2a9081ed88fb38db6f4edcb7d8f99621
• Result: SUCCEEDED
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