Bug#974965: licensecheck: fails to detect copyright holder beginning with a quote

[Jonas Smedegaard]

Package: licensecheck
Version: 3.0.47-1
Severity: normal

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This, appearing in chromium, emscripten, and qtwebengine-opensource-src:

  Copyright (c) 2019, "WebGPU native" developers

Is detected as copyright 2019 - with no copyright holder.

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