Bump org.spigotmc:spigot-api (#55)

Bumps org.spigotmc:spigot-api from 1.21.10-R0.1-SNAPSHOT to 1.21.11-R0.1-SNAPSHOT.

---
updated-dependencies:
- dependency-name: org.spigotmc:spigot-api
  dependency-version: 1.21.11-R0.1-SNAPSHOT
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

build.gradle.kts

@@ -31,7 +31,7 @@ repositories {
 val adventureVersion = "4.26.1"
 
 dependencies {
-    compileOnly("org.spigotmc:spigot-api:1.21.10-R0.1-SNAPSHOT")
+    compileOnly("org.spigotmc:spigot-api:1.21.11-R0.1-SNAPSHOT")
 
     compileOnly("org.apache.logging.log4j:log4j-api:2.25.3")
     implementation("org.bstats:bstats-bukkit:3.1.0")