fix(deps): update dependency io.papermc.paper:paper-api to v26.3.build.143-beta

Author: renovate[bot]

gradle/libs.versions.toml

@@ -20,7 +20,7 @@ slf4j = "2.0.20"
 sqlite-jdbc = "3.53.4.0"
 
 # platform api
-paper = "26.2.build.129-stable"
+paper = "26.3.build.143-beta"
 paper-javadoc = "26.2"
 
 # plugin api