fix(deps): update dependency mysql:mysql-connector-java to v8.0.31 (GoogleCloudPlatform#7465)

Author: renovate-bot

appengine-java11/cloudsql/pom.xml

@@ -73,7 +73,7 @@
     <dependency>
       <groupId>mysql</groupId>
       <artifactId>mysql-connector-java</artifactId>
-      <version>8.0.29</version>
+      <version>8.0.31</version>
       <scope>provided</scope>
     </dependency>
     <dependency>

cloud-sql/mysql/client-side-encryption/pom.xml

@@ -72,7 +72,7 @@
     <dependency>
       <groupId>mysql</groupId>
       <artifactId>mysql-connector-java</artifactId>
-      <version>8.0.29</version>
+      <version>8.0.31</version>
     </dependency>
     <dependency>
       <groupId>com.google.crypto.tink</groupId>

cloud-sql/mysql/servlet/pom.xml

@@ -52,7 +52,7 @@
     <dependency>
       <groupId>mysql</groupId>
       <artifactId>mysql-connector-java</artifactId>
-      <version>8.0.29</version>
+      <version>8.0.31</version>
     </dependency>
     <dependency>
       <groupId>com.google.cloud.sql</groupId>

flexible/cloudsql/pom.xml

@@ -79,7 +79,7 @@
     <dependency>                        <!-- http://dev.mysql.com/doc/connector-j/en/ -->
       <groupId>mysql</groupId>
       <artifactId>mysql-connector-java</artifactId>
-      <version>8.0.29</version>
+      <version>8.0.31</version>
     </dependency>
     <dependency>
       <groupId>com.google.cloud.sql</groupId>