ci: change alert-threshold to 120%

[thehowl]

Apologies for the whitespace changes; if you disable them, you'll see it's a one-line change.

See alert threshold on the documentation of the action.

Contributors' checklist...

• Added new tests, or not needed, or not feasible
• Provided an example (e.g. screenshot) to aid review or the PR is self-explanatory
• Updated the official documentation or not needed
• No breaking changes were made, or a BREAKING CHANGE: xxx message was included in the description
• Added references to related issues and PRs
• Provided any useful hints for running manual tests
• Added new benchmarks to generated graphs, if any. More info here.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 60.95%. Comparing base (41881ec) to head (48fa3d4).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2880      +/-   ##
==========================================
- Coverage   60.97%   60.95%   -0.02%     
==========================================
  Files         564      564              
  Lines       75273    75273              
==========================================
- Hits        45898    45884      -14     
- Misses      26008    26019      +11     
- Partials     3367     3370       +3     

Flag	Coverage Δ
contribs/gnodev	61.46% <ø> (ø)
contribs/gnofaucet	14.46% <ø> (-0.86%)	⬇️
gno.land	67.92% <ø> (ø)
gnovm	65.77% <ø> (ø)
misc/genstd	80.54% <ø> (ø)
misc/logos	19.88% <ø> (-0.36%)	⬇️
tm2	62.05% <ø> (-0.04%)	⬇️

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[thehowl]

@sw360cab disabled workflow for now; so at least we don't have failing CI