Upgrade redis to 3.3.11

[ofek]

No description provided.

[codecov]

Codecov Report

Merging #5150 into master will decrease coverage by 0.02%.
The diff coverage is 100%.

Impacted Files	Coverage Δ
redisdb/tests/test_default.py	95.79% <100%> (ø)	⬆️
redisdb/tests/test_auth.py	95.65% <100%> (+3.05%)	⬆️
datadog_checks_base/tests/conftest.py	33.33% <0%> (-66.67%)	⬇️
...atadog_checks_base/datadog_checks/base/__init__.py	73.33% <0%> (-13.34%)	⬇️
datadog_checks_base/tests/test_http.py	88.11% <0%> (-9.96%)	⬇️
datadog_checks_base/tests/test_winpdh.py	90.9% <0%> (-6.82%)	⬇️
redisdb/tests/conftest.py	85.71% <0%> (-4.77%)	⬇️
datadog_checks_base/datadog_checks/base/ddyaml.py	56.71% <0%> (-4.48%)	⬇️
datadog_checks_base/tests/test_pdhbasecheck.py	96% <0%> (-4%)	⬇️
...adog_checks_base/datadog_checks/base/utils/http.py	98.47% <0%> (-1.53%)	⬇️
... and 131 more