bugfix: Support serialization for dm.jdbc.driver.DmdbTimestamp (#6701)

[lyl2008dsg]

• I have registered the PR changes.

Ⅰ. Describe what this PR did

This pull request introduces support for serialization and deserialization of the dm.jdbc.driver.DmdbTimestamp class. The changes ensure that environments lacking the DM JDBC driver do not encounter errors or unnecessary logging.

Changes Made

1. Conditional Registration of Serializers and Deserializers:

• Added logic to register serializers and deserializers for dm.jdbc.driver.DmdbTimestamp only if the class is present in the classpath.
• This avoids issues in environments where the DM JDBC driver is not available.

2. Error Handling:

• No error logs are recorded if the dm.jdbc.driver.DmdbTimestamp class is not found.
• This is to prevent confusion for users who do not have the DM JDBC driver installed.

Ⅱ. Does this pull request fix one issue?

fixes #6701

Ⅲ. Why don't you add test cases (unit test/integration test)?

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[funky-eyes]

我认为你应该需要在rm-datasource中引入以下依赖
I think you should need to introduce the following dependencies in rm-datasource

            <dependency>
                <groupId>com.dameng</groupId>
                <artifactId>DmJdbcDriver18</artifactId>
                <scope>test</scope>
            </dependency>

[lyl2008dsg]

我认为你应该需要在rm-datasource中引入以下依赖 I think you should need to introduce the following dependencies in rm-datasource

            <dependency>
                <groupId>com.dameng</groupId>
                <artifactId>DmJdbcDriver18</artifactId>
                <scope>test</scope>
            </dependency>

done.
Yes, I think so too. It can improve unit test coverage.

[codecov]

Codecov Report

Attention: Patch coverage is 76.36364% with 13 lines in your changes missing coverage. Please review.

Project coverage is 50.88%. Comparing base (005ac0b) to head (dca4610).
Report is 1 commits behind head on 2.x.

Files	Patch %	Lines
...m/datasource/undo/parser/JacksonUndoLogParser.java	76.36%	12 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##                2.x    #6728      +/-   ##
============================================
+ Coverage     50.83%   50.88%   +0.04%     
- Complexity     5913     5914       +1     
============================================
  Files          1058     1058              
  Lines         36717    36772      +55     
  Branches       4362     4368       +6     
============================================
+ Hits          18666    18710      +44     
- Misses        16162    16173      +11     
  Partials       1889     1889              

Files	Coverage Δ
...m/datasource/undo/parser/JacksonUndoLogParser.java	71.06% <76.36%> (+2.05%)	⬆️

... and 3 files with indirect coverage changes

[funky-eyes]

LGTM

[xingfudeshi]

LGTM