ci: scope Spark SQL trigger paths to per-version shims and diff

Each spark_sql_test_<v>.yml currently triggers on `spark/src/main/**`
and `dev/diffs/**`, so a change confined to one Spark version's shim
or diff still fans out and runs the other versions' jobs.

Tighten the path allow-list per version:
- exclude unrelated `spark/src/main/spark-3.4/`, `spark-3.5/`, `spark-3.x/`,
  `spark-4.0/`, `spark-4.1/`, `spark-4.2/`, `spark-4.x/` directories so a
  3.4-only shim edit never fires the 4.x workflows, a 4.1-only shim edit
  never fires the 3.x workflows, and a future `spark-4.3/` shim won't
  trigger any 3.x workflow either
- replace `dev/diffs/**` with the single `dev/diffs/<full-version>.diff`
  the workflow actually applies, which also stops `dev/diffs/iceberg/`
  edits from triggering the Spark SQL test workflows

Author: andygrove

.github/workflows/spark_sql_test_3_4.yml

@@ -35,9 +35,14 @@ on:
       - "common/src/main/**"
       - "common/pom.xml"
       - "spark/src/main/**"
+      - "!spark/src/main/spark-3.5/**"
+      - "!spark/src/main/spark-4.0/**"
+      - "!spark/src/main/spark-4.1/**"
+      - "!spark/src/main/spark-4.2/**"
+      - "!spark/src/main/spark-4.x/**"
       - "!spark/src/main/scala/org/apache/comet/GenerateDocs.scala"
       - "spark/pom.xml"
-      - "dev/diffs/**"
+      - "dev/diffs/3.4.3.diff"
       - "pom.xml"
       - "rust-toolchain.toml"
       - ".github/workflows/spark_sql_test_3_4.yml"

.github/workflows/spark_sql_test_3_5.yml

@@ -35,9 +35,14 @@ on:
       - "common/src/main/**"
       - "common/pom.xml"
       - "spark/src/main/**"
+      - "!spark/src/main/spark-3.4/**"
+      - "!spark/src/main/spark-4.0/**"
+      - "!spark/src/main/spark-4.1/**"
+      - "!spark/src/main/spark-4.2/**"
+      - "!spark/src/main/spark-4.x/**"
       - "!spark/src/main/scala/org/apache/comet/GenerateDocs.scala"
       - "spark/pom.xml"
-      - "dev/diffs/**"
+      - "dev/diffs/3.5.8.diff"
       - "pom.xml"
       - "rust-toolchain.toml"
       - ".github/workflows/spark_sql_test_3_5.yml"
@@ -54,9 +59,14 @@ on:
       - "common/src/main/**"
       - "common/pom.xml"
       - "spark/src/main/**"
+      - "!spark/src/main/spark-3.4/**"
+      - "!spark/src/main/spark-4.0/**"
+      - "!spark/src/main/spark-4.1/**"
+      - "!spark/src/main/spark-4.2/**"
+      - "!spark/src/main/spark-4.x/**"
       - "!spark/src/main/scala/org/apache/comet/GenerateDocs.scala"
       - "spark/pom.xml"
-      - "dev/diffs/**"
+      - "dev/diffs/3.5.8.diff"
       - "pom.xml"
       - "rust-toolchain.toml"
       - ".github/workflows/spark_sql_test_3_5.yml"

.github/workflows/spark_sql_test_4_0.yml

@@ -35,9 +35,14 @@ on:
       - "common/src/main/**"
       - "common/pom.xml"
       - "spark/src/main/**"
+      - "!spark/src/main/spark-3.4/**"
+      - "!spark/src/main/spark-3.5/**"
+      - "!spark/src/main/spark-3.x/**"
+      - "!spark/src/main/spark-4.1/**"
+      - "!spark/src/main/spark-4.2/**"
       - "!spark/src/main/scala/org/apache/comet/GenerateDocs.scala"
       - "spark/pom.xml"
-      - "dev/diffs/**"
+      - "dev/diffs/4.0.2.diff"
       - "pom.xml"
       - "rust-toolchain.toml"
       - ".github/workflows/spark_sql_test_4_0.yml"
@@ -54,9 +59,14 @@ on:
       - "common/src/main/**"
       - "common/pom.xml"
       - "spark/src/main/**"
+      - "!spark/src/main/spark-3.4/**"
+      - "!spark/src/main/spark-3.5/**"
+      - "!spark/src/main/spark-3.x/**"
+      - "!spark/src/main/spark-4.1/**"
+      - "!spark/src/main/spark-4.2/**"
       - "!spark/src/main/scala/org/apache/comet/GenerateDocs.scala"
       - "spark/pom.xml"
-      - "dev/diffs/**"
+      - "dev/diffs/4.0.2.diff"
       - "pom.xml"
       - "rust-toolchain.toml"
       - ".github/workflows/spark_sql_test_4_0.yml"

.github/workflows/spark_sql_test_4_1.yml

@@ -35,9 +35,14 @@ on:
       - "common/src/main/**"
       - "common/pom.xml"
       - "spark/src/main/**"
+      - "!spark/src/main/spark-3.4/**"
+      - "!spark/src/main/spark-3.5/**"
+      - "!spark/src/main/spark-3.x/**"
+      - "!spark/src/main/spark-4.0/**"
+      - "!spark/src/main/spark-4.2/**"
       - "!spark/src/main/scala/org/apache/comet/GenerateDocs.scala"
       - "spark/pom.xml"
-      - "dev/diffs/**"
+      - "dev/diffs/4.1.1.diff"
       - "pom.xml"
       - "rust-toolchain.toml"
       - ".github/workflows/spark_sql_test_4_1.yml"