Bump mysql-connector-java

Bumps [mysql-connector-java](https://github.com/mysql/mysql-connector-j) from 5.1.45 to 8.0.16. - [Release notes](https://github.com/mysql/mysql-connector-j/releases) - [Changelog](https://github.com/mysql/mysql-connector-j/blob/release/8.0/CHANGES) - [Commits](mysql/mysql-connector-j@5.1.45...8.0.16) Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

07-spring-security-5/bonus-code-spring-security-user-registration/pom.xml

@@ -53,7 +53,7 @@
 <dependency>
 <groupId>mysql</groupId>
 <artifactId>mysql-connector-java</artifactId>
-<version>5.1.45</version>
+<version>8.0.16</version>
 </dependency>
 
 <dependency>