Bump github.com/aws/aws-xray-sdk-go from 1.7.0 to 1.8.5 in /internal/aws/xray/testdata/sampleserver #15472

Job	Run time
setup-environment	0s
check-collector-module-version	0s
check-codeowners	0s
checks	0s
correctness-traces	0s
integration-tests	0s
lint-matrix	0s
unittest-matrix	0s
build-examples	0s
correctness-metrics	0s
lint	1s
unittest (1.19)	1s
unittest (1.18)	2s
cross-compile	0s
windows-msi	0s
build-package	0s
publish-stable	0s
publish-dev	0s
publish-check	0s
	4s

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