Update dependency joda-time:joda-time to v2.13.0

Author: valtionavustus-renovate[bot]

project.clj

@@ -137,7 +137,7 @@
 
                  ;; miscellaneous
                  [clj-time "0.15.2"]
-                 [joda-time "2.12.7"] ; also required by com.github.java-json-tools/json-schema-validator
+                 [joda-time "2.13.0"] ; also required by com.github.java-json-tools/json-schema-validator
                                       ; and clj-time
                  [de.ubercode.clostache/clostache "1.4.0"] ; email templates and some html templating somewhere