Updated REDIS_READY_PATTERN to match more Redis versions

[AndyWilks79]

Updated REDIS_READY_PATTERN to match more versions of Redis. Since version 4.0.* the final startup statement has changed, embedded Redis loops forever when it does not match the expected pattern. Proposed regex modification matches versions included with embedded-redis and versions 3.0.* and 4.0.*

[codecov-io]

Codecov Report

Merging #3 into master will increase coverage by 0.33%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master       #3      +/-   ##
============================================
+ Coverage     70.31%   70.65%   +0.33%     
  Complexity      111      111              
============================================
  Files            20       20              
  Lines           502      501       -1     
  Branches         38       38              
============================================
+ Hits            353      354       +1     
+ Misses          128      126       -2     
  Partials         21       21

Impacted Files	Coverage Δ	Complexity Δ
src/main/java/redis/embedded/RedisServer.java	56.52% <ø> (ø)	5 <0> (ø)	⬇️
.../main/java/redis/embedded/RedisClusterBuilder.java	89.04% <0%> (-0.15%)	19% <0%> (ø)
...ain/java/redis/embedded/AbstractRedisInstance.java	83.33% <0%> (+3.33%)	11% <0%> (ø)	⬇️

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