media-video/obs-studio: add missing 'dev-qt/qtsvg' dependency

media-video/obs-studio: add missing 'dev-qt/qtsvg' dependency

Upstream started depending on this in '80875768'.

- https://github.com/obsproject/obs-studio/commit/80875768

Closes: https://bugs.gentoo.org/684906
Closes: https://github.com/gentoo/gentoo/pull/11652
Suggested-by: Jiří Helebrant <jiri.helebrant@nic.cz>
Package-Manager: Portage-2.3.66, Repoman-2.3.12
Signed-off-by: Jimi Huotari <chiitoo@gentoo.org>
Closes: https://github.com/gentoo/gentoo/pull/11886
Signed-off-by: Andreas Sturmlechner <asturm@gentoo.org>