[SPARK-54366][INFRA] Add free_disk_space step to K8s integration test GitHub Action job

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

This PR aims to add `free_disk_space` step to K8s integration test GitHub Action job.

### Why are the changes needed?

The K8s integration test CI is flaky due to `No space left on device` error.
- https://github.com/apache/spark/actions/runs/19354883389/job/55448531341

```
[info]   25/11/14 21:27:02 ERROR TaskSchedulerImpl: Lost executor 4 on 10.244.0.67: Unable to create executor due to /var/data/spark-163899dd-08da-4b76-b71d-c428207a3bdf/spark-1e9d976f-69b3-4274-af03-300cfc4d6fd5/-14621403551763155568738_cache
-> ./software.amazon.awssdk_bundle-2.29.52.jar:
No space left on device
```

Like the other four GitHub Action jobs, `free_disk_space_container` will mitigate this situation in this job.

**BEFORE**
```
$ git grep 'free_disk_space$'
.github/workflows/build_and_test.yml:          ./dev/free_disk_space
.github/workflows/release.yml:            ./dev/free_disk_space
```

**AFTER**
```
$ git grep 'free_disk_space$'
.github/workflows/build_and_test.yml:          ./dev/free_disk_space
.github/workflows/build_and_test.yml:            ./dev/free_disk_space
.github/workflows/release.yml:            ./dev/free_disk_space
```

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

No, this is a test infra change.

### How was this patch tested?

Pass the CIs and check the log. The following is the log result of this PR.
- https://github.com/dongjoon-hyun/spark/actions/runs/19395758483/job/55495933312

**BEFORE CLEANUP**
```
+ df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/root        72G   54G   18G  76% /
tmpfs           7.9G   84K  7.9G   1% /dev/shm
tmpfs           3.2G  1.1M  3.2G   1% /run
tmpfs           5.0M     0  5.0M   0% /run/lock
/dev/sda16      881M   62M  758M   8% /boot
/dev/sda15      105M  6.2M   99M   6% /boot/efi
/dev/sdb1        74G  4.1G   66G   6% /mnt
tmpfs           1.6G   12K  1.6G   1% /run/user/1001
```

**AFTER CLEANUP**
```
+ df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/root        72G   21G   52G  29% /
tmpfs           7.9G   84K  7.9G   1% /dev/shm
tmpfs           3.2G  1.1M  3.2G   1% /run
tmpfs           5.0M     0  5.0M   0% /run/lock
/dev/sda16      881M   62M  758M   8% /boot
/dev/sda15      105M  6.2M   99M   6% /boot/efi
/dev/sdb1        74G  4.1G   66G   6% /mnt
tmpfs           1.6G   12K  1.6G   1% /run/user/1001
```

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

No.

Closes #53077 from dongjoon-hyun/SPARK-54366.

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

Author: dongjoon-hyun

.github/workflows/build_and_test.yml

@@ -1325,6 +1325,11 @@ jobs:
           key: k8s-integration-coursier-${{ hashFiles('**/pom.xml', '**/plugins.sbt') }}
           restore-keys: |
             k8s-integration-coursier-
+      - name: Free up disk space
+        run: |
+          if [ -f ./dev/free_disk_space ]; then
+            ./dev/free_disk_space
+          fi
       - name: Install Java ${{ inputs.java }}
         uses: actions/setup-java@v4
         with: