Fix OSU extract_dir

[Insulinocytus]

OSU migrated updater from Squirrel to Velopack since 2024.906.1
This caused the file path changed from /lib/net45 to /lib/app.
ppy/osu#29783 (comment)

❯ scoop install osulazer
Installing 'osulazer' (2024.906.2) [64bit] from 'games' bucket
Loading osulazer-2024.906.2-full.nupkg from cache.
Checking hash of osulazer-2024.906.2-full.nupkg ... ok.
Extracting osulazer-2024.906.2-full.nupkg ... Could not find 'net45'! (error 16)
発生場所 C:\****\Scoop\apps\scoop\current\lib\core.ps1:889 文字:9
+         throw "Could not find '$(fname $from)'! (error $($proc.ExitCo ...
+         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : OperationStopped: (Could not find 'net45'! (error 16):String) [], RuntimeException
    + FullyQualifiedErrorId : Could not find 'net45'! (error 16)

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[github-actions]

All changes look good.

Wait for review from human collaborators.

osulazer

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