deps: bump com.github.retrooper.packetevents:spigot from 2.2.1 to 2.3.0 (#305)

Bumps com.github.retrooper.packetevents:spigot from 2.2.1 to 2.3.0.

---
updated-dependencies:
- dependency-name: com.github.retrooper.packetevents:spigot
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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bukkit/build.gradle

@@ -13,7 +13,7 @@ dependencies {
     implementation 'de.tr7zw:item-nbt-api:2.12.4'
 
     compileOnly 'org.spigotmc:spigot-api:1.17.1-R0.1-SNAPSHOT'
-    compileOnly 'com.github.retrooper.packetevents:spigot:2.2.1'
+    compileOnly 'com.github.retrooper.packetevents:spigot:2.3.0'
     compileOnly 'com.comphenix.protocol:ProtocolLib:5.1.0'
     compileOnly 'org.projectlombok:lombok:1.18.32'
     compileOnly 'commons-io:commons-io:2.16.1'