[KYUUBI #548] [TEST] Bump scalatest 3.1.4

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### _Why are the changes needed?_
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The latest stable version of `scalatest` is 3.2.7, released on Apr, 2021. We choose the 3.1.4 because there are severals breaking changes over 2 minor versions, and must fix all deprecated warnings in 3.1.4 before bump to 3.2.7.

### _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.readthedocs.io/en/latest/tools/testing.html#running-tests) locally before make a pull request

Closes #548 from pan3793/scalatest.

Closes #548

d803e3f [Cheng Pan] [TEST] Bump scalatest 3.1.4

Authored-by: Cheng Pan <379377944@qq.com>
Signed-off-by: fwang12 <fwang12@ebay.com>

pom.xml

@@ -81,7 +81,7 @@
         <slf4j.version>1.7.30</slf4j.version>
         <zookeeper.version>3.4.14</zookeeper.version>
 
-        <scalatest.version>3.0.3</scalatest.version>
+        <scalatest.version>3.1.4</scalatest.version>
         <iceberg.name>iceberg-spark3-runtime</iceberg.name>
         <iceberg.version>0.11.1</iceberg.version>