Bump mock_redis from 0.36.0 to 0.49.0 #263

Job	Run time
ubuntu-20.04 - 2.7	19s
ubuntu-20.04 - 3	30s
ubuntu-20.04 - 3.1	25s
ubuntu-20.04 - 3.2	23s
ubuntu-20.04 - truffleruby-head	50s
ubuntu-22.04 - 3	22s
ubuntu-22.04 - 3.1	24s
ubuntu-22.04 - 3.2	24s
macos-latest - 2.7	28s
macos-latest - 3	26s
macos-latest - 3.1	23s
macos-latest - 3.2	19s
macos-latest - truffleruby-head	35s
CI Status (matrix)	1s
	5m 49s

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