Bump org.codehaus.mojo:exec-maven-plugin from 3.4.1 to 3.5.0 (#21)

pom.xml

@@ -57,7 +57,7 @@
     <versions-maven-plugin.version>2.17.1</versions-maven-plugin.version>
 
     <!-- Third party plugin versions. Spring Boot Parent POM manages several already. -->
-    <exec-maven-plugin.version>3.4.1</exec-maven-plugin.version>
+    <exec-maven-plugin.version>3.5.0</exec-maven-plugin.version>
     <flatten-maven-plugin.version>1.6.0</flatten-maven-plugin.version>
     <git-build-hook-maven-plugin.version>3.5.0</git-build-hook-maven-plugin.version>
     <jacoco-maven-plugin.version>0.8.12</jacoco-maven-plugin.version>