Update thiserror requirement from 1 to 2 in /indy-data-types #89

Job	Run time
Run checks (ubuntu-latest)	2m 32s
Run checks (macos-latest)	1m 32s
Run checks (windows-latest)	7m 29s
Run tests (ubuntu-latest)	1m 1s
Run tests (macos-latest)	46s
Build library (linux-aarch64, ubuntu-latest, libindy_credx.so, aarch64-unknown-linux-gnu, true)	3m 8s
Run tests (windows-latest)	2m 18s
Build library (linux-x86_64, ubuntu-latest, libindy_credx.so, x86_64-unknown-linux-gnu, true)	3m 4s
Build library (darwin-universal, macos-latest, libindy_credx.dylib, darwin-universal, beta)	4m 6s
Build library (windows-x86_64, windows-latest, indy_credx.dll, x86_64-pc-windows-msvc)	8m 38s
Build and test Python wrapper (linux-aarch64, 3.8)	14s
Build and test Python wrapper (linux-x86_64, 3.8)	22s
Build and test Python wrapper (darwin-universal, 3.8)	39s
Build and test Python wrapper (windows-x86_64, 3.8)	50s
	36m 39s

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