Update dependency org.cactoos:cactoos to v0.55.0

pom.xml

@@ -142,7 +142,7 @@ OF THE POSSIBILITY OF SUCH DAMAGE.
       <dependency>
         <groupId>org.cactoos</groupId>
         <artifactId>cactoos</artifactId>
-        <version>0.51.0</version>
+        <version>0.55.0</version>
       </dependency>
       <dependency>
         <groupId>com.google.guava</groupId>