deps: bump me.clip:placeholderapi from 2.11.5 to 2.11.6 (#241)

Bumps me.clip:placeholderapi from 2.11.5 to 2.11.6.

---
updated-dependencies:
- dependency-name: me.clip:placeholderapi
  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>

bukkit/build.gradle

@@ -8,7 +8,7 @@ dependencies {
     compileOnly 'org.spigotmc:spigot-api:1.17.1-R0.1-SNAPSHOT'
     compileOnly 'commons-io:commons-io:2.16.1'
     compileOnly 'de.themoep:minedown-adventure:1.7.2-SNAPSHOT'
-    compileOnly 'me.clip:placeholderapi:2.11.5'
+    compileOnly 'me.clip:placeholderapi:2.11.6'
     compileOnly 'org.jetbrains:annotations:24.1.0'
     compileOnly 'org.projectlombok:lombok:1.18.32'