[Git][debian-gis-team/zipstream-ng][master] Convert d/watch to v4 syntax

[Sebastiaan Couwenberg]

filenamemangle is not working as expected:

  uscan info: Matching target for downloadurlmangle: https://github.com/pR0Ps/zipstream-ng/archive/refs/tags/v1.9.0.tar.gz
  uscan info: Upstream URL(+tag) to download is identified as    https://github.com/pR0Ps/zipstream-ng/archive/refs/tags/v1.9.0.tar.gz
  uscan info: Matching target for filenamemangle: https://github.com/pR0Ps/zipstream-ng/archive/refs/tags/v1.9.0.tar.gz
  uscan info: Filename (filenamemangled) for downloaded file: v1.9.0.tar.gz

Kind Regards,

Bas

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