fix(deps): update dependency multer to v2

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
multer	1.4.4 → 2.1.1

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Release Notes

expressjs/multer (multer)

v2.1.1

Compare Source

• Fix CVE-2026-3520 (GHSA-5528-5vmv-3xc2)
• fix error/abort handling

v2.1.0

Compare Source

• Add defParamCharset option for UTF-8 filename support (#​1210)
• Fix CVE-2026-2359 (GHSA-v52c-386h-88mc)
• Fix CVE-2026-3304 (GHSA-xf7r-hgr6-v32p)

v2.0.2

Compare Source

• Fix CVE-2025-7338 (GHSA-fjgf-rc76-4x9p)

v2.0.1

Compare Source

• Fix CVE-2025-48997 (GHSA-g5hg-p3ph-g8qg)

v2.0.0

Compare Source

• Breaking change: The minimum supported Node version is now 10.16.0
• Fix CVE-2025-47935 (GHSA-44fp-w29j-9vj5)
• Fix CVE-2025-47944 (GHSA-4pg4-qvpc-4q3h)

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Rooviewer   See task

No issues found. This is a clean dependency bump from multer 1.4.4 to 2.1.1. The codebase uses only standard multer APIs (dest option, upload.single(), req.file properties) which are fully compatible with v2. The only breaking change in v2 (minimum Node 10.16.0) is irrelevant since Express 5.x already requires a much newer Node version. Multiple CVE fixes are included in this upgrade.

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