Upgrade to webdav-client V5

[n-peugnet]

webdav-client v5 has some breaking changes that affect us quite a lot:

Breaking changes:

[...]

• Upload progress no longer supported (onUploadProgress): perry-mitchell/webdav-client#319 (comment)

[...]

A workaround is suggested, by using a ReadableStream in the body of the Request element but this is not supported by Firefox nor Safari as to now¹².

See also:

• whatwg/fetch#1438
• https://stackoverflow.com/questions/35711724/upload-progress-indicators-for-fetch
• https://github.com/teil-one/fetch-api-progress

Footnotes

1. https://developer.mozilla.org/en-US/docs/Web/API/Request/Request#browser_compatibility, look for the "Send ReadableStream in request body" in the compatibility table ↩

2. https://caniuse.com/mdn-api_request_request_request_body_readablestream ↩

[ArcticLampyrid]

Note that fetch with ReadableStream is not supported with HTTP 1.x

https://developer.chrome.com/docs/capabilities/web-apis/fetch-streaming-requests?hl=en