Bump 3rdparty from `9741497` to `5b2c4bd`

Bumps [3rdparty](https://github.com/nextcloud/3rdparty) from `9741497` to `5b2c4bd`.
- [Release notes](https://github.com/nextcloud/3rdparty/releases)
- [Commits](https://github.com/nextcloud/3rdparty/compare/974149755d9ab7ca1e7edf0f3fa63e6a6c01ac3f...5b2c4bd44fe8beddff3731516e53cc5ad9269c9b

)

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