chore(deps): update redis docker tag to v8

[steingran]

This PR contains the following updates:

Package	Update	Change
redis	major	7-alpine -> 8-alpine

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.87%. Comparing base (9fb3870) to head (bb21c54).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #86      +/-   ##
==========================================
- Coverage   75.27%   74.87%   -0.41%     
==========================================
  Files          36       36              
  Lines        2237     2237              
  Branches      310      310              
==========================================
- Hits         1684     1675       -9     
- Misses        443      449       +6     
- Partials      110      113       +3     

see 1 file with indirect coverage changes

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