Upgrade setup-conda from v1 to v1.2.1

[namannandan]

Description

Upgrade setup-conda from v1 to v1.2.1

Example failures observed with setup-conda v1: https://github.com/pytorch/serve/actions/runs/6404244594/job/17384395423

Getting original pythonLocation
  /usr/bin/which python
  Error: The process '/usr/bin/which' failed with exit code 1

[codecov]

Codecov Report

Merging #2678 (7de4dff) into master (88a19de) will not change coverage.
The diff coverage is n/a.

❗ Current head 7de4dff differs from pull request most recent head 8805768. Consider uploading reports for the commit 8805768 to get more accurate results

@@           Coverage Diff           @@
##           master    #2678   +/-   ##
=======================================
  Coverage   72.39%   72.39%           
=======================================
  Files          85       85           
  Lines        3956     3956           
  Branches       58       58           
=======================================
  Hits         2864     2864           
  Misses       1088     1088           
  Partials        4        4           

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