Release/v3.45.2

[jlmjanssen]

SQLite Release 3.45.2 On 2024-03-12

1. Fix an error in UPSERT, introduced by enhancement 3a in version 3.35.0 (2021-03-12), that could cause an index to get out-of-sync with its table. Forum thread 919c6579c8.
2. Reduce the scope of the NOT NULL strength reduction optimization that was added as item 8e in version 3.35.0 (2021-03-12). The optimization was being attempted in some contexts where it did not work, resulting in incorrect query results. Forum thread 440f2a2f17.
3. Other trifling corrections and compiler warning fixes that have come up since the previous patch release. See the timeline for details.