chore: update node to v20

[matejvasek]

• Update Node to version 20 for the s2i build strategy
• Ignore (till 2024-05-31) deletion error caused by Node having broken signal handling

[matzew]

--- FAIL: TestFunctionCloudEventsTemplate (262.24s)

[lkingland]

/retest

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 60.70%. Comparing base (b97d841) to head (9479445).
Report is 70 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2217      +/-   ##
==========================================
- Coverage   64.21%   60.70%   -3.51%     
==========================================
  Files         108      127      +19     
  Lines       13918    14779     +861     
==========================================
+ Hits         8937     8972      +35     
- Misses       4108     4906     +798     
- Partials      873      901      +28     

Flag	Coverage Δ
e2e-test	38.40% <ø> (+1.02%)	⬆️
e2e-test-oncluster	31.50% <ø> (+1.00%)	⬆️
e2e-test-oncluster-runtime	27.67% <ø> (?)
e2e-test-runtime-go	26.21% <ø> (?)
e2e-test-runtime-node	27.22% <ø> (?)
e2e-test-runtime-python	27.17% <ø> (?)
e2e-test-runtime-quarkus	27.26% <ø> (?)
e2e-test-runtime-rust	26.31% <ø> (?)
e2e-test-runtime-typescript	27.31% <ø> (?)
integration-tests	49.87% <ø> (+0.02%)	⬆️
unit-tests-macos-latest	?
unit-tests-ubuntu-latest	48.98% <ø> (-0.61%)	⬇️
unit-tests-windows-latest	47.60% <ø> (-1.27%)	⬇️

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[matejvasek]

PTAL @jrangelramos @matzew @lkingland @gauron99

[matzew]

/lgtm
/approve

[knative-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: matejvasek, matzew

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