chore(deps-dev): bump ex_doc from 0.32.2 to 0.34.2 #12

Job	Run time
Build and Cache deps	1m 30s
Build matrix	1s
Code formatting checks	12s
Check spelling	17s
Dialyzer static analysis (default)	2m 29s
Credo	22s
ESLint	51s
Missing translation keys check	53s
JS Tests	36s
Sobelow security analysis	37s
Blockscout Web Tests (default)	5m 26s
EthereumJSONRPC Tests (default)	53s
Explorer Tests (default)	4m 21s
Indexer Tests (default)	2m 30s
	20m 58s

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