chore: 升级构建配置到 Minecraft 26.1.2 / Java 25

- Loom 插件切换为 net.fabricmc.fabric-loom 1.18-SNAPSHOT & - Gradle wrapper 升级到 9.7.1 & - 依赖升级：loader 0.19.5 / fabric-api 0.155.3+26.1.2 / carpet 26.1+v260402 & - 编译目标 Java 25 & - CI 升级到 ubuntu-24.04 + JDK 25 + 新版 action

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,9 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.13-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.7.1-bin.zip
+networkTimeout=10000
+retries=0
+retryBackOffMs=500
+validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
-zipStorePath=wrapper/dists
+zipStorePath=wrapper/dists