Scala-Steward: Update postgresql from 42.7.6 to 42.7.7 (#463)

Author: scala-steward

examples/akka-persistence-app/build.sbt

@@ -60,7 +60,7 @@ libraryDependencies ++= Seq(
   "com.typesafe.akka" %% "akka-serialization-jackson" % akkaVersion,
   "com.lightbend.akka" %% "akka-persistence-jdbc" % akkaPersistenceJdbcVersion,
   "com.typesafe.akka" %% "akka-persistence-testkit" % akkaVersion % Test,
-  "org.postgresql" % "postgresql" % "42.7.6",
+  "org.postgresql" % "postgresql" % "42.7.7",
   // 4. Querying or projecting data from Akka Persistence
   "com.typesafe.akka" %% "akka-persistence-query" % akkaVersion,
   "com.lightbend.akka" %% "akka-projection-eventsourced" % akkaProjectionVersion,