PocketBase: v0.28.0 Release

> _To update the prebuilt executable you can run `./pocketbase update`._ - Write the default response body of `*Request` hooks that are wrapped in a transaction after the related transaction completes to allow propagating the transaction error ([#6462](https://github.com/pocketbase/pocketbase/discussions/6462#discussioncomment-12207818)). - Updated `app.DB()` to automatically routes raw write SQL statements to the nonconcurrent db pool ([#6689](https://github.com/pocketbase/pocketbase/discussions/6689)). _For the rare cases when it is needed users still have the option to explicitly target the specific pool they want using `app.ConcurrentDB()`/`app.NonconcurrentDB()`._ - ⚠️ Changed the default `json` field max size to 1MB. _Users still have the option to adjust the default limit from the collection field options but keep in mind that storing large strings/blobs in the database is known to cause performance issues and should be avoided when possible._ - ⚠️ Soft-deprecated and replaced `filesystem.System.GetFile(fileKey)` with `filesystem.System.GetReader(fileKey)` to avoid the confusion with `filesystem.File`. _The old method will still continue to work for at least until v0.29.0 but you'll get a console warning to replace it with `GetReader`._ - Added new `filesystem.System.GetReuploadableFile(fileKey, preserveName)` method to return an existing blob as a `*filesystem.File` value ([#6792](https://github.com/pocketbase/pocketbase/discussions/6792)). _This method could be useful in case you want to clone an existing Record file and assign it to a new Record (e.g. in a Record duplicate action)._ - Other minor improvements (updated the GitHub release min Go version to 1.23.9, updated npm and Go deps, etc.)