chore(repo): update GH actions (upgrade to node20 based actions)

[HuiSF]

Description of changes

Resolves warning such as

NOTE: the GH action used for codecov integration codecov/codecov-action will still cause this warning. Their fix should come any time soon.

Issue #, if available

Description of how you validated changes

Checklist

• PR description included
• yarn test passes
• Tests are changed or added
• Relevant documentation is changed or added (and PR referenced)

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (b814567) 88.01% compared to head (e367548) 87.52%.

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Additional details and impacted files

@@            Coverage Diff             @@
##             main   #12902      +/-   ##
==========================================
- Coverage   88.01%   87.52%   -0.50%     
==========================================
  Files         663      522     -141     
  Lines       18141    10108    -8033     
  Branches     3635     1970    -1665     
==========================================
- Hits        15967     8847    -7120     
+ Misses       2174     1261     -913     

Flag	Coverage Δ
adapter-nextjs	98.64% <ø> (ø)
analytics	62.75% <ø> (ø)
api	∅ <ø> (∅)
api-graphql	87.71% <ø> (ø)
api-rest	96.28% <ø> (ø)
auth	?
aws-amplify	100.00% <ø> (ø)
core	88.02% <ø> (ø)
datastore	?
datastore-storage-adapter	88.13% <ø> (ø)
geo	90.12% <ø> (ø)
interactions	96.10% <ø> (ø)
notifications	90.35% <ø> (ø)
predictions	86.00% <ø> (ø)
pubsub	94.70% <ø> (ø)
rtn-push-notification	100.00% <ø> (ø)
storage	91.28% <ø> (ø)

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