deps: update com.icegreen:greenmail to v2.1.3

Author: renovate[bot]

gradle/libs.versions.toml

@@ -26,7 +26,7 @@ diskLruCache = "2.0.2"
 exposed = "0.58.0"
 flexmark = "0.64.8"
 freemarker = "2.3.34"
-greenmail = "2.1.2"
+greenmail = "2.1.3"
 gson = "2.12.1"
 hikari = "6.2.1"
 hoplite = "2.9.0"