Bump spectator-reg-servo from 1.3.7 to 1.3.8 (#3356)

diff --git a/dependencies/default/pom.xml b/dependencies/default/pom.xml
index 9efc18f..3d724a9 100644
--- a/dependencies/default/pom.xml
+++ b/dependencies/default/pom.xml
@@ -92,7 +92,7 @@
     <servlet-api.version>4.0.4</servlet-api.version>
     <slf4j.version>1.7.36</slf4j.version>
     <snakeyaml.version>1.32</snakeyaml.version>
-    <spectator.version>1.3.7</spectator.version>
+    <spectator.version>1.3.8</spectator.version>
     <spring.version>5.3.22</spring.version>
     <spring-boot.version>2.6.7</spring-boot.version>
     <swagger.version>1.6.6</swagger.version>