Update SQLite to 3.25.0

[DL6ER]

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How familiar are you with the codebase?:

10

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Changelog: https://sqlite.org/releaselog/3_25_0.html

It doesn't seem like this update will bring any particularly new feature we could use but we should nevertheless keep on track with the regular releases of SQLite as those are the best supported ones.

We may want to use (at some point):

• Add support for renaming columns within a table using ALTER TABLE table RENAME COLUMN oldname TO newname

which is added in this version of SQLite.

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