Update ASM to 9.6 to support newer Java versions

Update ASM from 9.0 to 9.6, the latest version. According to https://asm.ow2.io/versions.html,
this version should work with Java up to 22.

For testing, I tried a sample project using Gradle's `jvmToolchain`:

```
kotlin {
  jvmToolchain(20)
}
```

And installed different versions of OpenJDK separately.

It works with OpenJDK 19 and 20.0.2, but not 21.0.1, the latest stable version
(https://jdk.java.net/archive/).

Here's the error message:

```
* What went wrong:
Execution failed for task ':app:compileDebugJavaWithJavac'.
> Could not resolve all files for configuration ':app:androidJdkImage'.
   > Failed to transform core-for-system-modules.jar to match attributes {artifactType=_internal_android_jdk_image, org.gradle.libraryelements=jar, org.gradle.usage=java-runtime}.
      > Execution failed for JdkImageTransform: /usr/local/google/home/kuanyingchou/Android/Sdk/platforms/android-34/core-for-system-modules.jar.
         > Error while executing process /usr/local/google/home/kuanyingchou/downloads/jdk-21.0.1/bin/jlink with arguments {--module-path /usr/local/google/home/kuanyingchou/.gradle/caches/transforms-3/b52ba5074efe1b01da421b426c4b2680/transformed/output/temp/jmod --add-modules java.base --output /usr/local/google/home/kuanyingchou/.gradle/caches/transforms-3/b52ba5074efe1b01da421b426c4b2680/transformed/output/jdkImage --disable-plugin system-modules}
```

It could be that AGP doesn't yet support JDK 21. From Gradle's release note
(https://docs.gradle.org/8.4/release-notes.html), it seems that Kotiln doesn't
support JDK 21 either:

```
Currently, you cannot run Gradle on Java 21 because Kotlin lacks support for JDK 21.
However, support for running Gradle with Java 21 is expected in future versions.
```

So the highest JDK version Hilt Gradle Plugin supports after this CL should be 20.

RELNOTES=N/A
PiperOrigin-RevId: 584641218

java/dagger/hilt/android/plugin/main/build.gradle

@@ -65,7 +65,7 @@ dependencies {
   compileOnly "com.android.tools.build:gradle:$agp_version"
   compileOnly "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
   compileOnly "com.google.devtools.ksp:symbol-processing-gradle-plugin:$ksp_version"
-  implementation 'org.ow2.asm:asm:9.0'
+  implementation 'org.ow2.asm:asm:9.6'
   implementation "com.squareup:javapoet:1.13.0"
 
   testImplementation gradleTestKit()