Update dependency org.eolang:eo-parser to v0.56.9

Author: renovate[bot]

pom.xml

@@ -128,7 +128,7 @@
     <dependency>
       <groupId>org.eolang</groupId>
       <artifactId>eo-parser</artifactId>
-      <version>0.51.6</version>
+      <version>0.56.9</version>
       <scope>test</scope>
     </dependency>
   </dependencies>