fix(deps): update module github.com/pkg/sftp to v1.13.5

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
github.com/pkg/sftp	require	patch	v1.13.4 -> v1.13.5

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Release Notes

pkg/sftp

v1.13.5

Compare Source

[GH-498] request server: add WithStartDirectory option
[GH-494] sequential writes: ensure to always return write errors, if any
[GH-492] PosixRename and Hardlink: convert remote paths to local paths
[GH-489] Fix missing io.EOF when concurency is disabled
[GH-485] Add File.ReadFrom test on a SectionReader
[GH-482] Sequentially issue write requests, process results concurrently
[GH-478] Translate EACCES to PERMISSION_DENIED
[GH-471] CI: run test cases also on 32-bit arch

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