Update dependency org.cactoos:cactoos to v0.61.0

Author: renovate[bot]

pom.xml

@@ -110,7 +110,7 @@ SOFTWARE.
     <dependency>
       <groupId>org.cactoos</groupId>
       <artifactId>cactoos</artifactId>
-      <version>0.55.0</version>
+      <version>0.61.0</version>
     </dependency>
     <dependency>
       <groupId>com.jcabi.incubator</groupId>