bump min java version

Author: zeitlinger

integration-tests/graal-incubating/build.gradle.kts

@@ -26,8 +26,19 @@ dependencies {
   implementation(project(":api:incubator"))
 }
 
-// org.graalvm.buildtools.native plugin requires java 11+ as of version 0.9.26
+// org.graalvm.buildtools.native plugin requires java 17+ as of version 0.11.1
 // https://github.com/graalvm/native-build-tools/blob/master/docs/src/docs/asciidoc/index.adoc
+tasks {
+  withType<JavaCompile>().configureEach {
+    sourceCompatibility = "17"
+    targetCompatibility = "17"
+    options.release.set(17)
+  }
+  withType<Test>().configureEach {
+    val testJavaVersion: String? by project
+    enabled = !testJavaVersion.equals("8")
+  }
+}
 
 graalvmNative {
   binaries {

integration-tests/graal/build.gradle.kts

@@ -24,8 +24,19 @@ dependencies {
   implementation(project(":exporters:otlp:all"))
 }
 
-// org.graalvm.buildtools.native plugin requires java 11+ as of version 0.9.26
+// org.graalvm.buildtools.native plugin requires java 17+ as of version 0.11.1
 // https://github.com/graalvm/native-build-tools/blob/master/docs/src/docs/asciidoc/index.adoc
+tasks {
+  withType<JavaCompile>().configureEach {
+    sourceCompatibility = "17"
+    targetCompatibility = "17"
+    options.release.set(17)
+  }
+  withType<Test>().configureEach {
+    val testJavaVersion: String? by project
+    enabled = !testJavaVersion.equals("8")
+  }
+}
 
 graalvmNative {
   binaries {