chore: update nvmrc to 22.21.1 to match what we deploy with

[rossmcewan]

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Align .nvmrc with deployment Node version

Updates .nvmrc to specify Node 22.21.1, aligning local development environments with the deployed runtime. Helps keep developer tooling and deployment targets consistent.

Key Changes

• Updated .nvmrc from Node 22.17.1 to 22.21.1

Affected Areas

• .nvmrc

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This summary was automatically generated by @propel-code-bot

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📊 1 file reviewed

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