fix(deps): update dependency io.papermc.paper:paper-api to v26

Author: renovate[bot]

gradle/libs.versions.toml

@@ -3,7 +3,7 @@ metadata.format.version = "1.1"
 [versions]
 
 velocity = "3.4.0"
-paper = "1.21.10-R0.1-SNAPSHOT"
+paper = "26.1.2.build.63-stable"
 sponge = "16.0.0"
 
 blossom = "2.2.0"