Bump org.codehaus.mojo:exec-maven-plugin from 3.5.0 to 3.5.1 (#66)

Author: dependabot[bot]

pom.xml

@@ -289,7 +289,7 @@
             <plugin>
                 <groupId>org.codehaus.mojo</groupId>
                 <artifactId>exec-maven-plugin</artifactId>
-                <version>3.5.0</version>
+                <version>3.5.1</version>
                 <executions>
                     <execution>
                         <id>generate-sitemap</id>