[ci-visibility] Fix random cypress integration tests timeouts

[juan-fernandez]

What does this PR do?

There are occasional timeouts for cypress tests. This PR:

• For cypress integration tests: handles childProcess.on('exit') and adds done in there. I'm not sure why, but not handling the exit of the process seems to leave node hanging.
• Parallises cypress tests for different cypress versions: cypress tests are by nature slow because they need to spin a browser. This should keep duration reasonable.

Motivation

Keep CI fast and green. I've run the integration tests job 10 times and it seems flakiness is gone (at least potentially): https://github.com/DataDog/dd-trace-js/actions/runs/5313741276

[github-actions]

Overall package size

Self size: 4.36 MB
Deduped: 60.72 MB
No deduping: 60.76 MB

Dependency sizes

name	version	self size	total size
@datadog/pprof	2.2.1	14.24 MB	15.12 MB
@datadog/native-iast-taint-tracking	1.5.0	14.86 MB	14.86 MB
@datadog/native-appsec	3.2.0	13.38 MB	13.39 MB
protobufjs	7.1.2	2.76 MB	6.55 MB
@datadog/native-iast-rewriter	2.0.1	2.09 MB	2.1 MB
@opentelemetry/core	1.3.1	784.66 kB	1.37 MB
@datadog/native-metrics	2.0.0	898.77 kB	1.3 MB
@opentelemetry/api	1.4.1	780.32 kB	780.32 kB
opentracing	0.14.7	194.81 kB	194.81 kB
semver	7.3.8	88.2 kB	118.6 kB
@datadog/sketches-js	2.1.0	109.9 kB	109.9 kB
lodash.sortby	4.7.0	75.76 kB	75.76 kB
lru-cache	7.14.0	74.95 kB	74.95 kB
ipaddr.js	2.0.1	59.52 kB	59.52 kB
ignore	5.2.0	48.87 kB	48.87 kB
import-in-the-middle	1.3.5	34.34 kB	38.81 kB
istanbul-lib-coverage	3.2.0	29.34 kB	29.34 kB
retry	0.10.1	27.44 kB	27.44 kB
lodash.uniq	4.5.0	25.01 kB	25.01 kB
limiter	1.1.5	23.17 kB	23.17 kB
lodash.kebabcase	4.1.1	17.75 kB	17.75 kB
lodash.pick	4.4.0	16.33 kB	16.33 kB
node-abort-controller	3.0.1	14.33 kB	14.33 kB
crypto-randomuuid	1.0.0	11.18 kB	11.18 kB
diagnostics_channel	1.1.0	7.07 kB	7.07 kB
path-to-regexp	0.1.7	6.78 kB	6.78 kB
koalas	1.0.2	6.47 kB	6.47 kB
methods	1.1.2	5.29 kB	5.29 kB
module-details-from-path	1.0.3	4.47 kB	4.47 kB

_{🤖 This report was automatically generated by heaviest-objects-in-the-universe}

[codecov]

Codecov Report

Merging #3255 (9df58a6) into master (839a6f8) will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #3255   +/-   ##
=======================================
  Coverage   86.02%   86.03%           
=======================================
  Files         194      194           
  Lines        7514     7517    +3     
  Branches       33       33           
=======================================
+ Hits         6464     6467    +3     
  Misses       1050     1050           

see 2 files with indirect coverage changes

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[pr-commenter]

Benchmarks

Comparing candidate commit 9df58a6 in PR branch juan-fernandez/fix-random-timeouts-cypress with baseline commit 839a6f8 in branch master.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 446 metrics, 26 unstable metrics.

[juan-fernandez]

the cypress version to install now comes as an env var from the CI job, this way we can more easily parallelise.