chore(deps): update dependency com.google.cloud.sql:cloud-sql-connector-r2dbc-mysql to v1.4.0 (#6349)
chore(deps): update dependency com.google.cloud.sql:cloud-sql-connector-r2dbc-mysql to v1.4.0 (#6349)

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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) | `1.3.4` -> `1.4.0` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud.sql:cloud-sql-connector-r2dbc-mysql/1.4.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud.sql:cloud-sql-connector-r2dbc-mysql/1.4.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud.sql:cloud-sql-connector-r2dbc-mysql/1.4.0/compatibility-slim/1.3.4)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud.sql:cloud-sql-connector-r2dbc-mysql/1.4.0/confidence-slim/1.3.4)](https://docs.renovatebot.com/merge-confidence/) |

---

### Release Notes

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

### [`v1.4.0`](https://togithub.com/GoogleCloudPlatform/cloud-sql-mysql-socket-factory/blob/master/CHANGELOG.md#&#8203;140-httpswwwgithubcomGoogleCloudPlatformcloud-sql-jdbc-socket-factorycomparev134v140-2021-11-02)

[Compare Source](https://togithub.com/GoogleCloudPlatform/cloud-sql-mysql-socket-factory/compare/v1.3.4...v1.4.0)

##### Features

-   improve reliability of refresh operations ([#&#8203;635](https://www.togithub.com/GoogleCloudPlatform/cloud-sql-jdbc-socket-factory/issues/635)) ([9d4ebe4](https://www.github.com/GoogleCloudPlatform/cloud-sql-jdbc-socket-factory/commit/9d4ebe405c9c67f5c7ac741c0f6c4fde784d7f7c))

##### Bug Fixes

-   add undeclared dependency ([#&#8203;648](https://www.togithub.com/GoogleCloudPlatform/cloud-sql-jdbc-socket-factory/issues/648)) ([4017d25](https://www.github.com/GoogleCloudPlatform/cloud-sql-jdbc-socket-factory/commit/4017d25cf16c4c9a48d87f23f0c0f84c5dd5f2ac))

##### [1.3.4](https://www.github.com/GoogleCloudPlatform/cloud-sql-jdbc-socket-factory/compare/v1.3.3...v1.3.4) (2021-10-05)

##### Bug Fixes

-   update dependencies to latest versions ([#&#8203;617](https://www.togithub.com/GoogleCloudPlatform/cloud-sql-jdbc-socket-factory/issues/617)) ([6be109a](https://www.github.com/GoogleCloudPlatform/cloud-sql-jdbc-socket-factory/commit/6be109a95f224c43d1c677e9d1be97b6d05f3b8b))

##### [1.3.3](https://www.github.com/GoogleCloudPlatform/cloud-sql-jdbc-socket-factory/compare/v1.3.2...v1.3.3) (2021-09-07)

##### Bug Fixes

-   update dependencies to latest versions ([#&#8203;597](https://www.togithub.com/GoogleCloudPlatform/cloud-sql-jdbc-socket-factory/issues/597)) ([3cba563](https://www.github.com/GoogleCloudPlatform/cloud-sql-jdbc-socket-factory/commit/3cba563023ac1cfcafd94d877865d1d315bb78a6))

##### [1.3.2](https://www.github.com/GoogleCloudPlatform/cloud-sql-jdbc-socket-factory/compare/v1.3.1...v1.3.2) (2021-08-03)

##### Bug Fixes

-   only replace refresh result if successful or current result is invalid ([#&#8203;561](https://www.togithub.com/GoogleCloudPlatform/cloud-sql-jdbc-socket-factory/issues/561)) ([01226b0](https://www.github.com/GoogleCloudPlatform/cloud-sql-jdbc-socket-factory/commit/01226b000b4596c76ed5809d02853b353725b669))
-   **r2dbc:** fetch updated SSLData for each new connection ([#&#8203;554](https://www.togithub.com/GoogleCloudPlatform/cloud-sql-jdbc-socket-factory/issues/554)) ([007759c](https://www.github.com/GoogleCloudPlatform/cloud-sql-jdbc-socket-factory/commit/007759ce9f63ed4247dbeef61772f86f6708d0ac))
-   remove dependency on internal sun.security.x509 classes ([#&#8203;564](https://www.togithub.com/GoogleCloudPlatform/cloud-sql-jdbc-socket-factory/issues/564)) ([79250e2](https://www.github.com/GoogleCloudPlatform/cloud-sql-jdbc-socket-factory/commit/79250e24bbe89ab39d506910b5fb1160a4c1f695))
-   strip padding from access tokens if present ([#&#8203;566](https://www.togithub.com/GoogleCloudPlatform/cloud-sql-jdbc-socket-factory/issues/566)) ([406bb66](https://www.github.com/GoogleCloudPlatform/cloud-sql-jdbc-socket-factory/commit/406bb66a37f34ba8b7a7a6f84a64a9e20e9cc925))

##### [1.3.1](https://www.github.com/GoogleCloudPlatform/cloud-sql-jdbc-socket-factory/compare/v1.3.0...v1.3.1) (2021-07-13)

##### Bug Fixes

-   exclude unreachable dependencies ([#&#8203;512](https://www.togithub.com/GoogleCloudPlatform/cloud-sql-jdbc-socket-factory/issues/512)) ([8b69577](https://www.github.com/GoogleCloudPlatform/cloud-sql-jdbc-socket-factory/commit/8b69577c8653ca61fa6ac66e021cd03d565f05e8))

</details>

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