Bump thiserror from 2.0.3 to 2.0.6 #6066

Job	Run time
Check	27s
coverage	10m 44s
test_all_features	14m 6s
test (beta)	1m 34s
test (stable)	1m 35s
Lints (beta)	34s
minimum_rust_version	8m 15s
test (windows)	3m 52s
Lints (stable)	40s
test (macos)	1m 25s
Run tests under wasm32-wasi	1m 15s
Check if wasm-pack builds a valid package for the sourmash crate	1m 41s
Check if cbindgen runs cleanly for generating the C headers	9m 2s
Publish (on tags, dry-run otherwise)	8m 55s
	1h 4m 5s

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