Change 'injectGitHash' task to properly format 'BuildConfig'

build.gradle

@@ -251,17 +251,19 @@ task injectGitHash {
     def gitCommitHash = {
         try {
             return 'git rev-parse --verify --short HEAD'.execute().text.trim()
-        } catch (e) {
+        } catch (ignored) {
             return "GIT_NOT_FOUND"
         }
     }
-    new File(projectDir, "src/main/java/emu/grasscutter/BuildConfig.java").text = """
-        package emu.grasscutter;
-        public class BuildConfig {
+
+    new File(projectDir, "src/main/java/emu/grasscutter/BuildConfig.java").text =
+        """package emu.grasscutter;
+
+public final class BuildConfig {
     public static final String VERSION = \"${version}\";
     public static final String GIT_HASH = \"${gitCommitHash()}\";
-        }
-    """
+}"""
+
 }
 
 processResources {