Update release.yml

Author: BKMbigo

.github/workflows/release.yml

@@ -18,6 +18,9 @@ jobs:
         - name: Validate gradle wrapper
           uses: gradle/wrapper-validation-action@v1
 
+        - name: Grant execute permission for gradlew
+          run: chmod +x gradlew
+
         - name: Build IDE Plugin
           run: ./gradlew :ide-plugins:intellij:buildPlugin