Update maven.yml

Author: Konloch

.github/workflows/maven.yml

@@ -23,6 +23,7 @@ jobs:
       with:
         java-version: ${{ matrix.java }}
         distribution: 'temurin'
+        cache: maven
     - name: Build with Maven
       run: mvn -B package --file pom.xml
     - name: Extract Maven project version