Update logback-classic to 1.4.8 (#130)

Author: scala-steward

build.sbt

@@ -37,7 +37,7 @@ lazy val core = (
       "org.eclipse.jgit" % "org.eclipse.jgit" % "6.6.0.202305301015-r",
       "org.slf4j" % "slf4j-api" % "2.0.7",
       "org.slf4j" % "log4j-over-slf4j" % "2.0.7", // for any java classes looking for this
-      "ch.qos.logback" % "logback-classic" % "1.4.7",
+      "ch.qos.logback" % "logback-classic" % "1.4.8",
       "org.scalatest" %% "scalatest" % "3.2.16" % Test,
     ),
     name := buildName + "-core",