Arreglado workflow (java 8 -> 17)

Author: hardcorefactions

.github/workflows/build.yml

@@ -21,10 +21,10 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
-      - name: Set up JDK 1.8
+      - name: Set up JDK 17
         uses: actions/setup-java@v1
         with:
-          java-version: 1.8
+          java-version: 17
       - name: 'Build with Maven (Bukkit)'
         run: 'cd bukkit; mvn clean package'
       - name: 'Build with Maven (BungeeCord)'