Bump github.com/aws/aws-sdk-go from 1.43.37 to 1.45.12 in /exporter/awsxrayexporter #1451

Job	Run time
setup-environment	17m 27s
checks	21s
correctness-metrics	2m 57s
build-examples	56s
check-collector-module-version	4s
correctness-traces	3m 38s
integration-tests	9m 23s
lint	26s
unittest (1.18)	37s
unittest (1.17)	59s
cross-compile	0s
windows-msi	0s
build-package	0s
publish-check	0s
publish-stable	0s
publish-dev	0s
	36m 48s

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