[SPARK-42230][INFRA][FOLLOWUP] Add GITHUB_PREV_SHA and APACHE_SPARK_REF to lint job

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

Like the other jobs, this PR aims to add `GITHUB_PREV_SHA` and `APACHE_SPARK_REF` environment variables to `lint` job.

### Why are the changes needed?

This is required to detect the changed module accurately.

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

No, this is a infra-only bug fix.

### How was this patch tested?

Manual review.

Closes #39809 from dongjoon-hyun/SPARK-42230-2.

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

Author: dongjoon-hyun

.github/workflows/build_and_test.yml

@@ -505,6 +505,7 @@ jobs:
       LANG: C.UTF-8
       PYSPARK_DRIVER_PYTHON: python3.9
       PYSPARK_PYTHON: python3.9
+      GITHUB_PREV_SHA: ${{ github.event.before }}
     container:
       image: ${{ needs.precondition.outputs.image_url }}
     steps:
@@ -520,6 +521,7 @@ jobs:
     - name: Sync the current branch with the latest in Apache Spark
       if: github.repository != 'apache/spark'
       run: |
+        echo "APACHE_SPARK_REF=$(git rev-parse HEAD)" >> $GITHUB_ENV
         git fetch https://github.com/$GITHUB_REPOSITORY.git ${GITHUB_REF#refs/heads/}
         git -c user.name='Apache Spark Test Account' -c user.email='[email protected]' merge --no-commit --progress --squash FETCH_HEAD
         git -c user.name='Apache Spark Test Account' -c user.email='[email protected]' commit -m "Merged commit" --allow-empty