Bump org.spigotmc:spigot-api

Bumps org.spigotmc:spigot-api from 1.20.4-R0.1-SNAPSHOT to 1.20.6-R0.1-SNAPSHOT.

---
updated-dependencies:
- dependency-name: org.spigotmc:spigot-api
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

build.gradle.kts

@@ -28,7 +28,7 @@ dependencies {
 
     // Other dependencies that are not required or already available at runtime
     compileOnly("org.projectlombok:lombok:1.18.30")
-    compileOnly("org.spigotmc:spigot-api:1.20.4-R0.1-SNAPSHOT")
+    compileOnly("org.spigotmc:spigot-api:1.20.6-R0.1-SNAPSHOT")
     compileOnly("com.github.MilkBowl:VaultAPI:1.7.1")
     compileOnly("net.ess3:EssentialsXSpawn:2.16.1")
     compileOnly("com.sk89q.worldedit:worldedit-bukkit:7.2.13-SNAPSHOT")