Update dependency com.mysql:mysql-connector-j to v8.4.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
com.mysql:mysql-connector-j (source)	8.2.0 -> 8.4.0

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Warning

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Release Notes

mysql/mysql-connector-j (com.mysql:mysql-connector-j)

v8.4.0

Compare Source

v8.3.0

Compare Source

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