ci: update GitHub Actions to use Node 20

[bduranleau-nr]

Ensure that workflows use the versions of actions that are running on Node 20. Node 16 has reached its end of life, and GitHub announced its deprecation in GitHub Actions.

Actions upgraded:

• actions/checkout@v3 -> v4: https://github.com/actions/checkout/releases/tag/v4.0.0
  • CHANGELOG: https://github.com/actions/checkout/blob/main/CHANGELOG.md
• docker/login-action@v2 -> v3: https://github.com/docker/login-action/releases/tag/v3.0.0
• docker/setup-qemu-action@v2 -> v3: https://github.com/docker/setup-qemu-action/releases/tag/v3.0.0
• codecov/codecov-action@v3 -> v3.1.5: https://github.com/codecov/codecov-action/releases/tag/v3.1.5
• actions/github-script@v2 -> v7: https://github.com/actions/github-script/releases/tag/v7.0.0
  • Breaking changes by version: https://github.com/actions/github-script?tab=readme-ov-file#breaking-changes
  • Required updating the github REST call to use rest context

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (bf0223c) 78.74% compared to head (7c13f60) 78.74%.

Additional details and impacted files

@@           Coverage Diff           @@
##              dev     #822   +/-   ##
=======================================
  Coverage   78.74%   78.74%           
=======================================
  Files         189      189           
  Lines       26370    26370           
=======================================
  Hits        20766    20766           
  Misses       5604     5604           

Flag	Coverage Δ
agent-for-php-7.0	77.60% <ø> (ø)
agent-for-php-7.1	77.33% <ø> (ø)
agent-for-php-7.2	77.89% <ø> (ø)
agent-for-php-7.3	77.91% <ø> (ø)
agent-for-php-7.4	77.58% <ø> (ø)
agent-for-php-8.0	77.67% <ø> (ø)
agent-for-php-8.1	77.63% <ø> (ø)
agent-for-php-8.2	77.41% <ø> (ø)
agent-for-php-8.3	77.41% <ø> (ø)

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