fix(deps): update dependency com.google.cloud.sql:cloud-sql-connector-r2dbc-mysql to v1.6.0 (#7113)
fix(deps): update dependency com.google.cloud.sql:cloud-sql-connector-r2dbc-mysql to v1.6.0 (#7113)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud.sql:cloud-sql-connector-r2dbc-mysql](https://togithub.com/GoogleCloudPlatform/cloud-sql-mysql-socket-factory) | `1.5.0` -> `1.6.0` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud.sql:cloud-sql-connector-r2dbc-mysql/1.6.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud.sql:cloud-sql-connector-r2dbc-mysql/1.6.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud.sql:cloud-sql-connector-r2dbc-mysql/1.6.0/compatibility-slim/1.5.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud.sql:cloud-sql-connector-r2dbc-mysql/1.6.0/confidence-slim/1.5.0)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>GoogleCloudPlatform/cloud-sql-mysql-socket-factory</summary>

### [`v1.6.0`](https://togithub.com/GoogleCloudPlatform/cloud-sql-mysql-socket-factory/blob/HEAD/CHANGELOG.md#&#8203;160-httpsgithubcomGoogleCloudPlatformcloud-sql-jdbc-socket-factorycomparev150v160-2022-05-03)

[Compare Source](https://togithub.com/GoogleCloudPlatform/cloud-sql-mysql-socket-factory/compare/v1.5.0...v1.6.0)

##### Features

-   **jdbc/postgres:** add compatibility for GraalVM native image ([#&#8203;805](https://togithub.com/GoogleCloudPlatform/cloud-sql-jdbc-socket-factory/issues/805)) ([c00c255](https://togithub.com/GoogleCloudPlatform/cloud-sql-jdbc-socket-factory/commit/c00c25533e31caadf0db8c50077cc1c310fd106c))

</details>

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