remove github actions we were not using

[rpadaki]

We had an action called set-environment and an action to request an Auth0 login. Neither of these was actually pertinent to our CI -- they were instead legacy actions from our client applications deploy. Hence, I removed some meaningless CI checks and deleted these actions, replacing any remaining uses with simple python steps instead.

[codecov[bot]]

Codecov Report

Merging #7495 (6ce07ff) into dev (8d26a90) will increase coverage by 0.01%. The diff coverage is n/a.

:exclamation: Current head 6ce07ff differs from pull request most recent head 2e32f79. Consider uploading reports for the commit 2e32f79 to get more accurate results

@@            Coverage Diff             @@
##              dev    #7495      +/-   ##
==========================================
+ Coverage   55.94%   55.96%   +0.01%     
==========================================
  Files         158      158              
  Lines       32519    32519              
==========================================
+ Hits        18193    18199       +6     
+ Misses      14071    14066       -5     
+ Partials      255      254       -1     

Flag	Coverage Δ		*Carryforward flag
backend-services	49.31% <ø> (+0.10%)	:arrow_up:
protocol	57.33% <ø> (ø)		Carriedforward from 8d26a90

*This pull request uses carry forward flags. Click here to find out more.

Impacted Files	Coverage Δ
...kend/services/subscriptions/subscription_client.go	30.06% <0.00%> (+4.19%)	:arrow_up:

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