chore(deps): bump dev.slne.surf:surf-api-gradle-plugin

Bumps dev.slne.surf:surf-api-gradle-plugin from 1.21.8+ to 1.21.7-1.3.1.

---
updated-dependencies:
- dependency-name: dev.slne.surf:surf-api-gradle-plugin
  dependency-version: 1.21.7-1.3.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

build.gradle.kts

@@ -8,7 +8,7 @@ buildscript {
         maven("https://repo.slne.dev/repository/maven-public/") { name = "maven-public" }
     }
     dependencies {
-        classpath("dev.slne.surf:surf-api-gradle-plugin:1.21.8+")
+        classpath("dev.slne.surf:surf-api-gradle-plugin:1.21.7+")
     }
 }