Chore: upgrade prisma and update referential actions

[mipyykko]

#1190 + some added cascade deletes

[codecov]

Codecov Report

Merging #1192 (22a1285) into master (a9a548f) will decrease coverage by 0.34%.
The diff coverage is 36.60%.

@@            Coverage Diff             @@
##           master    #1192      +/-   ##
==========================================
- Coverage   65.51%   65.17%   -0.34%     
==========================================
  Files         124      124              
  Lines        5222     5278      +56     
  Branches     1160     1225      +65     
==========================================
+ Hits         3421     3440      +19     
- Misses       1677     1714      +37     
  Partials      124      124              

Flag	Coverage Δ
backend	65.17% <36.60%> (-0.34%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
backend/api/routes/completions.ts	58.02% <0.00%> (-0.37%)	⬇️
backend/api/routes/progress.ts	30.85% <0.00%> (-0.91%)	⬇️
...nsumer/common/userCourseProgress/BAI/completion.ts	14.28% <0.00%> (-0.43%)	⬇️
backend/graphql/Completion/model.ts	40.24% <0.00%> (-0.50%)	⬇️
backend/graphql/Completion/queries.ts	24.52% <0.00%> (-1.48%)	⬇️
backend/graphql/StudyModule/model.ts	55.55% <0.00%> (-2.14%)	⬇️
backend/graphql/Tag.ts	41.46% <0.00%> (-0.34%)	⬇️
backend/graphql/User/model.ts	35.75% <0.00%> (-0.89%)	⬇️
backend/graphql/UserCourseProgress.ts	30.25% <0.00%> (-0.26%)	⬇️
backend/graphql/UserCourseServiceProgress.ts	49.05% <0.00%> (ø)
... and 14 more

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