Migrate to `sea-orm` instead of Diesel #5369

Job	Run time
Rust / `cargo deny`	3m 2s
Rust / Clippy	2m 22s
Nix / Build	0s
Rust / Report Missing Dependencies	57s
Rust CI / Linux (x64)	3m 33s
Rust CI / Linux (aarch64)	3m 36s
Rust CI / macOS (x64)	3m 32s
Rust CI / macOS (aarch64)	3m 16s
Rust CI / Windows (x64)	3m 16s
	23m 34s

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