chore(deps): update dependency redis to v4

[renovate-bot]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
redis	==3.5.3 -> ==4.0.0

---

Release Notes

redis/redis-py

v4.0.0

Compare Source

Changes Since 3.5.3

4.0.0-rc2 release notes
4.0.0-rc1 release notes
4.0.0-beta3 release notes
4.0.0-beta2 release notes
4.0.0-beta1 ​release notes

🚀 New Features

• FT.EXPLAINCLI intentionally raising NotImplementedError (#​1705)

🐛 Bug Fixes

• Restoring ZRANGE desc for Redis < 6.2.0 (#​1697)
• Response parsing occasionally fails to parse floats (#​1692)
• Re-enabling read-the-docs (#​1707)

🧰 Maintenance

• Call HSET after FT.CREATE to avoid keyspace scan (#​1706)
• Unit tests fixes for compatibility (#​1703)
• Improve documentation about Locks (#​1701)
• Fixes to allow --redis-url to pass through all tests (#​1700)
• Fix unit tests running against Redis 4.0.0 (#​1699)
• Search alias test fix (#​1695)
• Adding RediSearch/RedisJSON tests (#​1691)
• Updating codecov rules (#​1689)
• Tests to validate custom JSON decoders (#​1681)
• Added breaking icon to release drafter (#​1702)

Contributors

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

@​AvitalFineRedis, @​ashtul, @​chayim and @​jerr0328

---

Configuration

📅 Schedule: At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Renovate will not automatically rebase this PR, because other commits have been found.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, click this checkbox.

---

This PR has been generated by WhiteSource Renovate. View repository job log here.

[busunkim96]

It looks like redis has removed support for 2.7 in their latest release:

------------------------------------------------------------
- testing /workspace/appengine/standard/migration/memorystore
------------------------------------------------------------
Using noxfile-template from parent folder (/workspace/appengine/standard).
nox > Running session py-2.7
nox > Creating virtual environment (virtualenv) using python2.7 in .nox/py-2-7
nox > python -m pip install -r requirements.txt
No user noxfile_config found: detail: No module named 'noxfile_config'
nox > Command python -m pip install -r requirements.txt failed with exit code 1:
DEPRECATION: Python 2.7 reached the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 is no longer maintained. pip 21.0 will drop support for Python 2.7 in January 2021. More details about Python 2 support in pip can be found at https://pip.pypa.io/en/latest/development/release-process/#python-2-support pip 21.0 will remove support for this functionality.
Ignoring Flask: markers 'python_version > "3.0"' don't match your environment
ERROR: Could not find a version that satisfies the requirement redis==4.0.0 (from -r requirements.txt (line 1)) (from versions: 0.6.0, 0.6.1, 1.34, 1.34.1, 2.0.0, 2.2.0, 2.2.2, 2.2.4, 2.4.0, 2.4.1, 2.4.2, 2.4.3, 2.4.4, 2.4.5, 2.4.6, 2.4.7, 2.4.8, 2.4.9, 2.4.10, 2.4.11, 2.4.12, 2.4.13, 2.6.0, 2.6.1, 2.6.2, 2.7.0, 2.7.1, 2.7.2, 2.7.3, 2.7.4, 2.7.5, 2.7.6, 2.8.0, 2.9.0, 2.9.1, 2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.5, 2.10.6, 3.0.0, 3.0.0.post1, 3.0.1, 3.1.0, 3.2.0, 3.2.1, 3.3.0, 3.3.1, 3.3.2, 3.3.3, 3.3.4, 3.3.5, 3.3.6, 3.3.7, 3.3.8, 3.3.9, 3.3.10, 3.3.11, 3.4.0, 3.4.1, 3.5.0, 3.5.1, 3.5.2, 3.5.3, 4.0.0b3)
ERROR: No matching distribution found for redis==4.0.0 (from -r requirements.txt (line 1))
nox > Session py-2.7 failed.
PWD: /workspace/appengine/standard/migration/memorystore
Testing failed: Nox returned a non-zero exit code.
err: exit status 1