Make mvnw executable in CI workflow

Author: Mirzoxid

.github/workflows/ci.yml

@@ -7,7 +7,6 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
-
     steps:
       - uses: actions/checkout@v3
 
@@ -17,5 +16,8 @@ jobs:
           distribution: 'temurin'
           java-version: '17'
 
+      - name: Make mvnw executable
+        run: chmod +x mvnw
+
       - name: Build
         run: ./mvnw -B clean verify