Update humanmade/aws-xray requirement from ~1.3.6 to ~1.3.7

Updates the requirements on [humanmade/aws-xray](https://github.com/humanmade/aws-xray) to permit the latest version.
- [Release notes](https://github.com/humanmade/aws-xray/releases)
- [Changelog](https://github.com/humanmade/aws-xray/blob/master/CHANGELOG.md)
- [Commits](humanmade/aws-xray@1.3.6...1.3.7)

---
updated-dependencies:
- dependency-name: humanmade/aws-xray
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

composer.json

@@ -30,7 +30,7 @@
 	"require": {
 		"php": ">=7.1",
 		"humanmade/wp-redis-predis-client": "0.1.1",
-		"humanmade/aws-xray": "~1.3.6",
+		"humanmade/aws-xray": "~1.3.7",
 		"humanmade/s3-uploads": "^3.0.7",
 		"humanmade/cavalcade": "^2.0.2",
 		"humanmade/wp-redis": "1.4.4",