Bump github.com/aws/aws-sdk-go-v2/config from 1.18.27 to 1.19.0 in /extension/sigv4authextension #7157

Job	Run time
govulncheck (receiver-0)	4m 30s
setup-environment	0s
govulncheck (receiver-1)	3m 47s
govulncheck (processor)	3m 36s
govulncheck (exporter)	6m 26s
govulncheck (extension)	3m 4s
govulncheck (connector)	3m 22s
govulncheck (internal)	3m 34s
govulncheck (pkg)	3m 42s
check-codeowners	0s
check-collector-module-version	0s
lint-matrix	0s
build-examples	0s
correctness-metrics	0s
correctness-traces	0s
checks	0s
integration-tests	0s
unittest-matrix	0s
lint	0s
unittest	0s
coverage	0s
cross-compile	0s
build-package	0s
windows-msi	0s
publish-check	0s
publish-stable	0s
publish-dev	0s
rotate-milestone	0s
	32m 1s

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