[KYUUBI #2498] Upgrade Delta version to 1.2.1

### _Why are the changes needed?_

upgrade delta version to 1.2.1

### _How was this patch tested?_
- [ ] Add some test cases that check the changes thoroughly including negative and positive cases if possible

- [ ] Add screenshots for manual tests if appropriate

- [x] [Run test](https://kyuubi.apache.org/docs/latest/develop_tools/testing.html#running-tests) locally before make a pull request

Closes #2502 from yangrong688/KYUUBI-2498.

Closes #2498

8211830 [yangrong688] upgrade delta version to 1.2.1
2b3ab33 [yangrong688] upgrade delta version to 1.2.1

Authored-by: yangrong688 <yangrong.jxufe@gmail.com>
Signed-off-by: Cheng Pan <chengpan@apache.org>

Author: yangrong688

pom.xml

@@ -105,7 +105,7 @@
         <commons-lang.version>2.6</commons-lang.version>
         <commons-lang3.version>3.10</commons-lang3.version>
         <curator.version>2.12.0</curator.version>
-        <delta.version>1.2.0</delta.version>
+        <delta.version>1.2.1</delta.version>
         <fb303.version>0.9.3</fb303.version>
         <flink.version>1.14.4</flink.version>
         <flink.archive.name>flink-${flink.version}-bin-scala_${scala.binary.version}.tgz</flink.archive.name>
@@ -1910,7 +1910,7 @@
             <id>spark-3.2</id>
             <properties>
                 <spark.version>3.2.1</spark.version>
-                <delta.version>1.2.0</delta.version>
+                <delta.version>1.2.1</delta.version>
                 <iceberg.name>iceberg-spark-runtime-3.2_${scala.binary.version}</iceberg.name>
                 <maven.plugin.scalatest.exclude.tags>org.apache.kyuubi.tags.ExtendedSQLTest,org.apache.kyuubi.tags.HudiTest</maven.plugin.scalatest.exclude.tags>
             </properties>