set test java to 25, remove deprecated usage

Signed-off-by: Gregor Zeitlinger <[email protected]>

Author: zeitlinger

prometheus-metrics-instrumentation-jvm/src/test/java/io/prometheus/metrics/instrumentation/jvm/JvmMemoryMetricsTest.java

@@ -30,6 +30,7 @@ class JvmMemoryMetricsTest {
   private final MemoryUsage memoryUsagePoolCollectionEdenSpace = Mockito.mock(MemoryUsage.class);
   private final MemoryUsage memoryUsagePoolCollectionOldGen = Mockito.mock(MemoryUsage.class);
 
+  @SuppressWarnings("deprecation")
   @BeforeEach
   public void setUp() {
     when(mockMemoryBean.getHeapMemoryUsage()).thenReturn(memoryUsageHeap);

prometheus-metrics-instrumentation-jvm/src/test/java/io/prometheus/metrics/instrumentation/jvm/JvmThreadsMetricsTest.java

@@ -174,6 +174,7 @@ private ThreadWithInvalidId(long id, Runnable runnable) {
      * Note that only Java versions < 21 call this to get the thread id. With Java 21 and newer it's
      * no longer possible to make an invalid thread id.
      */
+    @SuppressWarnings("deprecation")
     @Override
     public long getId() {
       return this.id;