Update github workflow

Author: rien

.github/workflows/java.yml

@@ -1,18 +1,17 @@
 name: Java
 
 on:
-  pull_request:
   push:
 
 jobs:
   example-exercises:
     runs-on: ubuntu-latest
     container:
-      image: openjdk:12-alpine
+      image: eclipse-temurin:21
 
     steps:
     - uses: actions/checkout@v1
     - name: Install dependencies
-      run: apk add --no-cache jq=1.6-r0
+      run: apt update && apt install -y jq
     - name: Evaluate sample exercises
-      run: ./integration-tests/run
+      run: ./integration-tests/run

integration-tests/run

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 set -e
 
 # Default values
@@ -127,4 +127,4 @@ echo "Major changes: $major_change"
 if [ "$minor_change" -gt 0 ] || [ "$major_change" -gt 0 ]; then
     echo "FAIL. Run with --overwrite to update the results."
     exit 1
-fi
+fi