Bump com.signalfx.public:signalfx-java from 1.0.37 to 1.0.38 (#4519)

Bumps [com.signalfx.public:signalfx-java](https://github.com/signalfx/signalfx-java) from 1.0.37 to 1.0.38.
- [Release notes](https://github.com/signalfx/signalfx-java/releases)
- [Commits](signalfx/signalfx-java@v1.0.37...v1.0.38)

---
updated-dependencies:
- dependency-name: com.signalfx.public:signalfx-java
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

gradle/libs.versions.toml

@@ -66,7 +66,7 @@ postgre = "42.6.0"
 prometheus = "0.16.0"
 reactor = "2022.0.13"
 rest-assured = "5.3.2"
-signalfx = "1.0.37"
+signalfx = "1.0.38"
 slf4j = "1.7.36"
 spectator-atlas = "1.7.4"
 spring = "5.3.31"