[SPARK-52315] Upgrade kubernetes-client to version 7.3.1

### What changes were proposed in this pull request?
This PR aims to upgrade the kubernetes-client version to 7.3.1.

### Why are the changes needed?
This will bring the following bug fixes:
- https://github.com/fabric8io/kubernetes-client/releases/tag/v7.3.1

### Does this PR introduce _any_ user-facing change?
No.

### How was this patch tested?
Pass the CIs.

### Was this patch authored or co-authored using generative AI tooling?
No.

Closes apache#229 from williamhyun/k8s.

Authored-by: William Hyun <[email protected]>
Signed-off-by: Dongjoon Hyun <[email protected]>

Author: williamhyun

gradle/libs.versions.toml

@@ -15,7 +15,7 @@
 # specific language governing permissions and limitations
 # under the License.
 [versions]
-fabric8 = "7.3.0"
+fabric8 = "7.3.1"
 lombok = "1.18.38"
 operator-sdk = "4.9.0"
 okhttp = "4.12.0"