Update mailpit.properties

Author: N6REJ

modules/mailpit.properties

@@ -15,3 +15,4 @@
 1.24.2 = https://github.com/Bearsampp/modules-untouched/releases/download/Mailpit-2025.5.6/mailpit-windows-amd64.zip
 1.26.0 = https://github.com/Bearsampp/modules-untouched/releases/download/mailpit-2025.6.7/mailpit-windows-amd64.zip
 1.27.0 = https://github.com/Bearsampp/modules-untouched/releases/download/2025.6.29/mailpit-windows-amd64.zip
+1.27.4 = https://github.com/Bearsampp/modules-untouched/releases/download/Mailpit-2025.8.15/mailpit-windows-amd64.zip