Update pre-commit Config

[learnitall]

Description

Updates our pre-commit config file with latest versions of hooks. See #334

Fixes

Warnings produced by pylint for usage of dict() rather than {}.

[codecov-commenter]

Codecov Report

Merging #335 (6c865d8) into master (2ca9886) will not change coverage.
The diff coverage is 50.00%.

@@           Coverage Diff           @@
##           master     #335   +/-   ##
=======================================
  Coverage   41.87%   41.87%           
=======================================
  Files          15       15           
  Lines         905      905           
=======================================
  Hits          379      379           
  Misses        526      526           

Flag	Coverage Δ
gha	41.87% <50.00%> (ø)
python-3.6	41.87% <50.00%> (ø)
unit	41.87% <50.00%> (ø)

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Impacted Files	Coverage Δ
snafu/benchmarks/_benchmark.py	46.47% <0.00%> (ø)
snafu/config.py	97.95% <100.00%> (ø)
snafu/registry.py	90.90% <100.00%> (ø)

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[learnitall]

/rerun all

[comet-perf-ci]

Results for SNAFU CI Test

Test	Result	Runtime
snafu/hammerdb	PASS	00:06:03
snafu/smallfile_wrapper	PASS	00:09:35
snafu/flent_wrapper	PASS	00:07:13
snafu/scale_openshift_wrapper	PASS	00:09:21
snafu/sysbench	PASS	00:02:36
snafu/benchmarks/uperf	PASS	00:21:42
snafu/image_pull_wrapper	PASS	00:02:50
snafu/ycsb_wrapper	PASS	00:06:01
snafu/stressng_wrapper	PASS	00:03:22
snafu/fio_wrapper	PASS	00:16:44
snafu/log_generator_wrapper	PASS	00:02:59
snafu/upgrade_openshift_wrapper	PASS	00:00:00
snafu/iperf	PASS	00:05:02
snafu/vegeta_wrapper	PASS	00:03:30
snafu/fs_drift_wrapper	PASS	00:04:04
snafu/pgbench_wrapper	PASS	00:03:17