build(deps): Bump github.com/aws/aws-xray-sdk-go (open-telemetry#3358)

Bumps [github.com/aws/aws-xray-sdk-go](https://github.com/aws/aws-xray-sdk-go) from 1.3.0 to 1.4.0.
- [Release notes](https://github.com/aws/aws-xray-sdk-go/releases)
- [Changelog](https://github.com/aws/aws-xray-sdk-go/blob/master/CHANGELOG.md)
- [Commits](aws/aws-xray-sdk-go@v1.3.0...v1.4.0)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

internal/aws/xray/testdata/sampleapp/go.mod

@@ -4,5 +4,5 @@ go 1.15
 
 require (
 	github.com/aws/aws-sdk-go v1.38.30
-	github.com/aws/aws-xray-sdk-go v1.3.0
+	github.com/aws/aws-xray-sdk-go v1.4.0
 )

internal/aws/xray/testdata/sampleapp/go.sum

@@ -3,8 +3,8 @@ github.com/DATA-DOG/go-sqlmock v1.4.1/go.mod h1:f/Ixk793poVmq4qj/V1dPUg2JEAKC73Q
 github.com/aws/aws-sdk-go v1.17.12/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
 github.com/aws/aws-sdk-go v1.38.30 h1:X+JDSwkpSQfoLqH4fBLmS0rou8W/cdCCCD5lntTk9Vs=
 github.com/aws/aws-sdk-go v1.38.30/go.mod h1:hcU610XS61/+aQV88ixoOzUoG7v3b31pl2zKMmprdro=
-github.com/aws/aws-xray-sdk-go v1.3.0 h1:O+jtGCD4nl8CkZPWpj2O6RqNXw1v4WTtRSJhFrniQ8s=
-github.com/aws/aws-xray-sdk-go v1.3.0/go.mod h1:tmxq1c+yeEbMh39OmRFuXOrse5ajRlMmDXJ6LrCVsIs=
+github.com/aws/aws-xray-sdk-go v1.4.0 h1:6dsQCMOLLnHIyHA5a5dNOz1Ocm72T868bPmEkiRm0ZE=
+github.com/aws/aws-xray-sdk-go v1.4.0/go.mod h1:tmxq1c+yeEbMh39OmRFuXOrse5ajRlMmDXJ6LrCVsIs=
 github.com/davecgh/go-spew v0.0.0-20160907170601-6d212800a42e/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=