[KYUUBI #6644] Bump Paimon to 0.8

# 🔍 Description
## Issue References 🔗

This pull request fixes #

## Describe Your Solution 🔧

- bump Paimon from 0.7.x-incubating to 0.8.2
- Paimon is currently used for Authz plugin testing only for Paimon Spark catalog

## Types of changes 🔖

- [ ] Bugfix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing functionality to change)

## Test Plan 🧪

#### Behavior Without This Pull Request ⚰️

#### Behavior With This Pull Request 🎉

#### Related Unit Tests

---

# Checklist 📝

- [ ] This patch was not authored or co-authored using [Generative Tooling](https://www.apache.org/legal/generative-tooling.html)

**Be nice. Be informative.**

Closes #6644 from bowenliang123/paimon08.

Closes #6644

6944099e4 [liangbowen] update paimon to 0.8

Lead-authored-by: Bowen Liang  <liangbowen@gf.com.cn>
Co-authored-by: liangbowen <liangbowen@gf.com.cn>
Signed-off-by: liangbowen <liangbowen@gf.com.cn>

pom.xml

@@ -182,7 +182,7 @@
         <netty.version>4.1.108.Final</netty.version>
         <openai.java.version>0.12.0</openai.java.version>
         <retrofit.version>2.9.0</retrofit.version>
-        <paimon.version>0.7.0-incubating</paimon.version>
+        <paimon.version>0.8.2</paimon.version>
         <paimon.artifact>paimon-spark-${spark.binary.version}</paimon.artifact>
         <phoenix.version>6.0.0</phoenix.version>
         <postgresql.version>42.7.2</postgresql.version>