Add tests for getCredentials with multiple goproxy_servers and maven_… #12003

Job	Run time
check-codeql-versions	13s
analyze-other (actions)	51s
analyze-other (python)	53s
analyze-javascript (ubuntu-22.04)	4m 38s
analyze-javascript (ubuntu-24.04)	5m 8s
analyze-javascript (windows-2022)	5m 19s
analyze-javascript (windows-2022, linked)	5m 15s
analyze-javascript (macos-15, linked)	7m 52s
analyze-javascript (windows-2025)	5m 56s
analyze-javascript (ubuntu-24.04, linked)	4m 36s
analyze-javascript (macos-14)	9m 5s
analyze-javascript (windows-2025, linked)	6m 27s
analyze-javascript (macos-15)	5m 54s
analyze-javascript (macos-14, linked)	6m 56s
analyze-javascript (ubuntu-22.04, linked)	4m 31s
	1h 13m 34s

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