IamAwsProvider: fix url with role name #601

Job	Run time
Test on python 3.9 and ubuntu-latest	1m 53s
Test on python 3.9 and windows-latest	4m 49s
Test on python 3.9 and macos-latest	27s
Test on python 3.10 and ubuntu-latest	1m 48s
Test on python 3.10 and windows-latest	4m 30s
Test on python 3.10 and macos-latest	32s
Test on python 3.11 and ubuntu-latest	1m 29s
Test on python 3.11 and windows-latest	4m 16s
Test on python 3.11 and macos-latest	11s
Test on python 3.12 and ubuntu-latest	1m 37s
Test on python 3.12 and windows-latest	5m 19s
Test on python 3.12 and macos-latest	13s
Test on python 3.13.0 and ubuntu-latest	1m 39s
Test on python 3.13.0 and windows-latest	6m 3s
Test on python 3.13.0 and macos-latest	46s
	35m 32s

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