Update dependency io.papermc.paper:paper-api to v1.21.9-pre2-R0.1-SNAPSHOT

Author: renovate[bot]

build.gradle.kts

@@ -31,7 +31,7 @@ repositories {
 
 dependencies {
     compileOnly("net.thenextlvl.services:service-io:2.3.1")
-    compileOnly("io.papermc.paper:paper-api:1.21.8-R0.1-SNAPSHOT")
+    compileOnly("io.papermc.paper:paper-api:1.21.9-pre2-R0.1-SNAPSHOT")
 
     implementation("net.thenextlvl.core:adapters:2.0.3")
     implementation("net.thenextlvl.core:files:3.0.1")