CI: Bump temurin jdk version from 17 to 19

Change-Id: I724a7ff064648bd9968cea2a06d9bac4f09f8355
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 7845f56..6a77a75 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,4 +1,4 @@
-image: eclipse-temurin:17
+image: eclipse-temurin:19
 
 stages:
     - build
@@ -17,7 +17,7 @@
 build:
   stage: build
   script:
-    - ./gradlew --build-cache shadowJar
+    - ./gradlew --build-cache clean test shadowJar
   artifacts:
     paths:
       - app/build/libs/korapxmltool.jar