Bump version number to target MC 1.21.8

build.gradle

@@ -30,7 +30,7 @@ repositories {
 }
 
 dependencies {
-    compileOnly("io.papermc.paper:paper-api:1.21.5-R0.1-SNAPSHOT")
+    compileOnly("io.papermc.paper:paper-api:${minecraft_version}${paper_version_suffix}")
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
 
     testImplementation 'org.junit.jupiter:junit-jupiter-api:5.8.1'
@@ -44,7 +44,7 @@ tasks {
         // Configure the Minecraft version for our task.
         // This is the only required configuration besides applying the plugin.
         // Your plugin's jar (or shadowJar if present) will be used automatically.
-        minecraftVersion("1.21.5")
+        minecraftVersion("${minecraft_version}")
     }
 }
 

gradle.properties

@@ -0,0 +1,2 @@
+minecraft_version=1.21.8
+paper_version_suffix=-R0.1-SNAPSHOT