chore: Restrict push to be triggered for main only

Author: comphead

.github/workflows/spark_sql_test.yml

@@ -22,7 +22,7 @@ concurrency:
   cancel-in-progress: true
 
 on:
-  pull_request:
+  push:
     branches:
       - main
     paths-ignore:
@@ -32,6 +32,14 @@ on:
       - "native/core/benches/**"
       - "native/spark-expr/benches/**"
       - "spark/src/test/scala/org/apache/spark/sql/benchmark/**"
+  pull_request:
+    paths-ignore:
+      - "doc/**"
+      - "docs/**"
+      - "**.md"
+      - "native/core/benches/**"
+      - "native/spark-expr/benches/**"
+      - "spark/src/test/scala/org/apache/spark/sql/benchmark/**"
   # manual trigger
   # https://docs.github.com/en/actions/managing-workflow-runs/manually-running-a-workflow
   workflow_dispatch: