fix(build): relocate bundled ExtraUtils' slimefun4 refs to slimefun5

Author: intisy

build.gradle.kts

@@ -84,7 +84,10 @@ tasks {
     shadowJar {
         relocate("org.bstats", "fluffymachines.libs.bstats")
         archiveFileName.set("FluffyMachines-$displayVersion.jar")
-                relocate("dev.j3fftw.extrautils", "io.ncbpfluffybear.fluffymachines.extrautils")
+        relocate("dev.j3fftw.extrautils", "io.ncbpfluffybear.fluffymachines.extrautils")
+        // Bundled ExtraUtils is compiled against upstream Slimefun4; repoint its API refs to our
+        // slimefun5 package (core provides slimefun5 at runtime).
+        relocate("io.github.thebusybiscuit.slimefun4", "io.github.thebusybiscuit.slimefun5")
         exclude("META-INF/**")
     }
     build {