Update experimental debugger to 5.0.0.a7

[karthiknadig]

For #8380

[codecov-io]

Codecov Report

Merging #8381 into master will decrease coverage by 0.67%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master   #8381      +/-   ##
=========================================
- Coverage   59.37%   58.7%   -0.68%     
=========================================
  Files         509     509              
  Lines       23293   22923     -370     
  Branches     3759    3754       -5     
=========================================
- Hits        13831   13457     -374     
- Misses       8566    8570       +4     
  Partials      896     896

Impacted Files	Coverage Δ
...nt/datascience/jupyter/invalidNotebookFileError.ts	0% <0%> (-75%)	⬇️
.../client/datascience/jupyter/jupyterConnectError.ts	0% <0%> (-66.67%)	⬇️
...science/jupyter/jupyterKernelPromiseFailedError.ts	0% <0%> (-50%)	⬇️
...ent/datascience/jupyter/jupyterWaitForIdleError.ts	0% <0%> (-50%)	⬇️
...cience/jupyter/jupyterDebuggerNotInstalledError.ts	50% <0%> (-30%)	⬇️
src/client/language/characters.ts	12% <0%> (-21.34%)	⬇️
src/client/datascience/cellFactory.ts	51.51% <0%> (-19%)	⬇️
src/client/testing/codeLenses/main.ts	60% <0%> (-17.78%)	⬇️
src/client/constants.ts	75% <0%> (-5%)	⬇️
src/client/providers/providerUtilities.ts	84.61% <0%> (-4.28%)	⬇️
... and 28 more

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