chore(deps): update dependency redis to v4.0.2 (GoogleCloudPlatform#7147

)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [redis](https://togithub.com/redis/redis-py) | `==4.0.1` -> `==4.0.2` | [![age](https://badges.renovateapi.com/packages/pypi/redis/4.0.2/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/pypi/redis/4.0.2/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/pypi/redis/4.0.2/compatibility-slim/4.0.1)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/pypi/redis/4.0.2/confidence-slim/4.0.1)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>redis/redis-py</summary>

### [`v4.0.2`](https://togithub.com/redis/redis-py/releases/v4.0.2)

[Compare Source](https://togithub.com/redis/redis-py/compare/v4.0.1...v4.0.2)

#### Changes

#### 🐛 Bug Fixes

-   Restoring Sentinel commands to redis client ([#&GoogleCloudPlatform#8203;1723](https://togithub.com/redis/redis-py/issues/1723))
-   Better removal of hiredis warning ([#&GoogleCloudPlatform#8203;1726](https://togithub.com/redis/redis-py/issues/1726))

#### 🧰 Maintenance

-   Adding links to redis documents in function calls ([#&GoogleCloudPlatform#8203;1719](https://togithub.com/redis/redis-py/issues/1719))

#### Contributors

We'd like to thank all the contributors who worked on this release!

[@&GoogleCloudPlatform#8203;Carlosbogo](https://togithub.com/Carlosbogo), [@&GoogleCloudPlatform#8203;sculley](https://togithub.com/sculley) and [@&GoogleCloudPlatform#8203;wuisawesome](https://togithub.com/wuisawesome)

</details>

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appengine/standard_python3/redis/requirements.txt

@@ -1,2 +1,2 @@
 Flask==2.0.1
-redis==4.0.1
+redis==4.0.2

functions/memorystore/redis/requirements.txt

@@ -1 +1 @@
-redis==4.0.1
+redis==4.0.2

memorystore/redis/requirements.txt

@@ -13,5 +13,5 @@
 # [START memorystore_requirements]
 Flask==2.0.1
 gunicorn==20.1.0
-redis==4.0.1
+redis==4.0.2
 # [END memorystore_requirements]