Bump github.com/aws/aws-sdk-go from 1.43.37 to 1.45.7 in /exporter/awsxrayexporter #1283

Job	Run time
setup-environment	7m 49s
unittest (1.18)	2m 31s
unittest (1.17)	1m 59s
check-collector-module-version	5s
build-examples	1m 5s
checks	2m 6s
correctness-metrics	4m 14s
correctness-traces	4m 58s
integration-tests	8m 36s
lint	2m 56s
cross-compile	0s
build-package	0s
windows-msi	0s
publish-dev	0s
publish-stable	0s
publish-check	0s
	36m 19s

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