fix: change credential decoding in `handleAuthorizationRequest` #2145

Job	Run time
SonarCloud connector	1m 3s
SonarCloud datamanager	1m 59s
SonarCloud dapp	1m 26s
SonarCloud snap	2m 11s
SonarCloud did-provider-key	2m 9s
SonarCloud docs	51s
SonarCloud extended-verification-lib	2m 11s
	11m 50s

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