Update librarian to set the content-type and cache-control on GCS artifacts

Author: martinbonnin

gradle/libs.versions.toml

@@ -26,6 +26,6 @@ kgp = { id = "org.jetbrains.kotlin.jvm", version.ref = "kgp" }
 serialization = { id = "org.jetbrains.kotlin.plugin.serialization", version.ref = "kgp" }
 ksp = { id = "com.google.devtools.ksp", version.ref = "ksp" }
 gratatouille = { id = "com.gradleup.gratatouille", version.ref = "gratatouille-plugin" }
-librarian = { id = "com.gradleup.librarian", version = "0.2.2-SNAPSHOT-6367d1177eb7b1a9e1252fe47ef2f15de406e2f2" }
+librarian = { id = "com.gradleup.librarian", version = "0.2.2-SNAPSHOT-e8574739fa730c6118181ba7b8cf7f559a568fd0" }
 nmcp = { id = "com.gradleup.nmcp", version.ref = "nmcp" }
 compat = { id = "com.gradleup.tapmoc", version = "0.4.1-SNAPSHOT-86d664ab69b813963b91060ecce036be943088ed" }