updated ubuntu version in dockerfile

[nitinryali]

*Issue number of the reported bug or feature request: #295

Describe your changes
Updated ubuntu version in dockerfile for both stages

Testing performed
Build the image from the docker file

Additional context

[nitinryali]

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.19%. Comparing base (debc9e8) to head (ac774f0).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #297   +/-   ##
=======================================
  Coverage   79.19%   79.19%           
=======================================
  Files          51       51           
  Lines        5542     5542           
  Branches      577      577           
=======================================
  Hits         4389     4389           
  Misses       1153     1153           

Flag	Coverage Δ
cpp	79.19% <ø> (ø)
python	79.19% <ø> (ø)

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