Remove deprecated version in Docker compose files

[greschd]

The version element in Docker compose files is obsolete and can be removed. See https://docs.docker.com/reference/compose-file/version-and-name/#version-top-level-element-obsolete

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.04%. Comparing base (218e03f) to head (6f12678).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #704   +/-   ##
=======================================
  Coverage   95.04%   95.04%           
=======================================
  Files         109      109           
  Lines        5710     5710           
  Branches      323      323           
=======================================
  Hits         5427     5427           
  Misses        282      282           
  Partials        1        1           

Flag	Coverage Δ
direct-launch	91.64% <ø> (ø)
minimum-deps	93.25% <ø> (ø)
python-3.10	94.30% <ø> (ø)
python-3.11	94.23% <ø> (ø)
python-3.12	94.43% <ø> (ø)
server-2024R2	90.91% <ø> (ø)
server-2025R1	94.23% <ø> (ø)
server-2025R2	94.23% <ø> (ø)
server-latest	94.85% <ø> (ø)

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