chore(deps): Update dependency filesize to v11.0.19

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
filesize (source)	11.0.18 → 11.0.19

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Release Notes

avoidwork/filesize.js (filesize)

v11.0.19

Compare Source

• fix: resolve audit findings — padding truncation, isNaN clarity, structuredClone #300
• docs: add issue templates, security policy, and update contributing guide #299

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