Change tests to always use databases prefixed with 'mycli_'

[schmeic]

Description

• Upgrade some dev requirements
• Fix the status command to work with missing 'Flush_commands' (#1056)
• Change tests to always use databases prefixed with 'mycli_' (#1013)

  Checklist

• [x] I've added this contribution to the changelog.md.
• [x] I've added my name to the AUTHORS file (or it's already there).

[codecov-commenter]

Codecov Report

:exclamation: No coverage uploaded for pull request base (main@854a18d). Click here to learn what that means. The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #1060   +/-   ##
=======================================
  Coverage        ?   67.61%           
=======================================
  Files           ?       26           
  Lines           ?     2748           
  Branches        ?        0           
=======================================
  Hits            ?     1858           
  Misses          ?      890           
  Partials        ?        0           

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update 854a18d...3976764. Read the comment docs.