Update pureconfig to 0.17.8

Author: aiven-scala-steward[bot]

build.sbt

@@ -22,7 +22,7 @@ val postgresqlJdbcVersion       = "42.7.3"
 val scalaLoggingVersion         = "3.9.5"
 val logbackClassicVersion       = "1.5.6"
 val declineVersion              = "2.4.1"
-val pureConfigVersion           = "0.17.6"
+val pureConfigVersion           = "0.17.8"
 val scalaTestVersion            = "3.2.18"
 val scalaTestScalaCheckVersion  = s"$scalaTestVersion.0"
 val pekkoStreamCirceVersion     = "1.0.0"