[close #2361]Update mysql connector from 5.1.44 to 5.1.49

[Daemonxiao]

What problem does this PR solve?

Close #2361.

What is changed and how it works?

Update mysql-connector-java from 5.1.44 to 5.1.48.

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below): refer manual test in [BUG] When run JDBC TLS test, it reports a warn "closing inbound before receiving peer's close_notify" #2361.
• No code

Side effects

• Possible performance regression
• Increased code complexity
• Breaking backward compatibility

Related changes

• Need to cherry-pick to the release branch

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• shiyuhang0
• xuanyu66

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[Daemonxiao]

/run-all-tests

[Daemonxiao]

/run-all-tests

[Daemonxiao]

/run-all-tests

[xuanyu66]

/run-all-tests

[shiyuhang0]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 2d41815