update gatling to 3.4.1 && update picatinny to 0.6.1

Author: chepk

src/main/g8/default.properties

@@ -3,7 +3,7 @@ package=ru.tinkoff.load
 description=Creates a Gatling project with sample performance test.
 scala_version=2.12.12
 sbt_version=1.3.13
-gatling_version=3.4.0
+gatling_version=3.4.1
 sbt_gatling_version=3.2.1
-gatling_picatinny_version=0.6.0
+gatling_picatinny_version=0.6.1
 verbatim=*.conf *.xml