Update dependency commons-codec:commons-codec to v1.21.0

Author: renovate[bot]

project.clj

@@ -14,7 +14,7 @@
                          [org.clojure/tools.logging "1.3.1"]
                          [cheshire "5.13.0"]
                          [clj-time "0.15.2"]
-                         [commons-codec "1.20.0"]
+                         [commons-codec "1.21.0"]
 
                          [org.slf4j/slf4j-api "2.0.17"]
                          [prismatic/schema "1.4.1"]