Merge pull request #1036 from gooddata/dependabot/maven/spring.version-5.3.8

Bump spring.version from 5.3.6 to 5.3.8

Reviewed-by: Libor Ryšavý
             https://github.com/liry

Author: gdgate

pom.xml

@@ -51,7 +51,7 @@
         <httpcore.version>4.4.14</httpcore.version>
         <jackson.version>2.12.4</jackson.version>
         <slf4j.version>1.7.30</slf4j.version>
-        <spring.version>5.3.6</spring.version>
+        <spring.version>5.3.8</spring.version>
         <jadler.version>1.3.0</jadler.version>
         <json-unit.version>2.27.0</json-unit.version>
         <surefire.version>2.22.2</surefire.version>