[SPARK-53710] Upgrade junit to 5.13.4

### What changes were proposed in this pull request?

This PR aims to upgrade `junit` to 5.13.4 for `v0.5`.

### Why are the changes needed?

To use the latest bug fixed versions.
- https://docs.junit.org/5.13.4/release-notes/#release-notes-5.13.4
- https://docs.junit.org/5.13.4/release-notes/#release-notes-5.13.3
- https://docs.junit.org/5.13.4/release-notes/#release-notes-5.13.2

### Does this PR introduce _any_ user-facing change?

No, this is a test dependency.

### How was this patch tested?

Pass the CIs.

### Was this patch authored or co-authored using generative AI tooling?

No.

Closes #342 from dongjoon-hyun/SPARK-53710.

Authored-by: Dongjoon Hyun <dongjoon@apache.org>
Signed-off-by: Dongjoon Hyun <dongjoon@apache.org>

Author: dongjoon-hyun

gradle/libs.versions.toml

@@ -23,7 +23,7 @@ spark = "4.0.1"
 log4j = "2.24.3"
 
 # Test
-junit = "5.13.1"
+junit = "5.13.4"
 jacoco = "0.8.13"
 mockito = "5.18.0"
 okhttp = "4.12.0"