actions (#1)

* Update maven-publish.yml

.github/workflows/maven-publish.yml

@@ -1,20 +1,25 @@
 name: Build and upload jar
-
 on:
   push:
     branches: [ master ]
-
+  pull_request:
+    branches: [ master ]
 jobs:
   build:
-
     runs-on: ubuntu-latest
-
     steps:
       - uses: actions/checkout@v4
-      - name: Set up JDK 8
+      - name: Set up JDK 21
         uses: actions/setup-java@v4
         with:
           distribution: 'temurin'
-          java-version: '8'
+          java-version: '21'
       - name: Build with Maven
-        run: mvn package --file pom.xml -Dmaven.compiler.failOnWarning=false
+        run: mvn -B package --file pom.xml
+      - name: Upload a Build Artifact
+        uses: actions/[email protected]
+        with:
+          # Artifact name
+          name: SnowballFight
+          # A file, directory or wildcard pattern that describes what to upload
+          path: target/*.jar