chore(ci): use new node lts

[Shinigami92]

Description

Update the GitHub workflows to use the new node LTS v16 instead of v14
Also we want to use always the newest version of actions and pnpm so we don't pin the exact version of such

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

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• Read the Contributing Guidelines.
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• Provide a description in this PR that addresses what the PR is solving, or reference the issue that it solves (e.g. fixes #123).
• Ideally, include relevant tests that fail without this PR but pass with it.