Update dependency webdav to v4.8.0

This MR contains the following updates:

Package	Type	Update	Change
webdav	dependencies	minor	4.6.1 -> 4.8.0

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Release Notes

perry-mitchell/webdav-client

v4.8.0

Compare Source

2022-01-11

• #​282 onDownloadProgress option
• #​285 AbortSignal option support
• Node engine specified at >=10

v4.7.0

Compare Source

2021-08-27

• #​65 Lock / Unlock methods

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