[Snyk] Upgrade mysql:mysql-connector-java from 8.0.12 to 8.0.30

[bonfaceshisakha]

This PR was automatically created by Snyk using the credentials of a real user.

Snyk has created this PR to upgrade mysql:mysql-connector-java from 8.0.12 to 8.0.30.

:information_source: Keep your dependencies up-to-date. This makes it easier to fix existing vulnerabilities and to more quickly identify and fix newly disclosed vulnerabilities when they affect your project.

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- The recommended version is **18 versions** ahead of your current version. - The recommended version was released **2 months ago**, on 2022-07-01. The recommended version fixes: Severity | Issue | PriorityScore (*) | Exploit Maturity | :-------------------------:|:-------------------------|-------------------------|:------------------------- | Access Control Bypass
[SNYK-JAVA-MYSQL-451464](https://snyk.io/vuln/SNYK-JAVA-MYSQL-451464) | **590/1000**
**Why?** Has a fix available, CVSS 8.8 | No Known Exploit | Denial of Service (DoS)
[SNYK-JAVA-COMGOOGLEPROTOBUF-2331703](https://snyk.io/vuln/SNYK-JAVA-COMGOOGLEPROTOBUF-2331703) | **590/1000**
**Why?** Has a fix available, CVSS 8.8 | No Known Exploit | Integer Overflow
[SNYK-JAVA-COMGOOGLEPROTOBUF-173761](https://snyk.io/vuln/SNYK-JAVA-COMGOOGLEPROTOBUF-173761) | **590/1000**
**Why?** Has a fix available, CVSS 8.8 | No Known Exploit | Improper Authorization
[SNYK-JAVA-MYSQL-2386864](https://snyk.io/vuln/SNYK-JAVA-MYSQL-2386864) | **590/1000**
**Why?** Has a fix available, CVSS 8.8 | No Known Exploit | XML External Entity (XXE) Injection
[SNYK-JAVA-MYSQL-1766958](https://snyk.io/vuln/SNYK-JAVA-MYSQL-1766958) | **590/1000**
**Why?** Has a fix available, CVSS 8.8 | Proof of Concept | Privilege Escalation
[SNYK-JAVA-MYSQL-174574](https://snyk.io/vuln/SNYK-JAVA-MYSQL-174574) | **590/1000**
**Why?** Has a fix available, CVSS 8.8 | No Known Exploit (*) Note that the real score may have changed since the PR was raised.

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