Move to release PyPI with a Trusted Publisher

[digitronik]

• Removed token
• Added trusted plublisher
• Fixed: Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/upload-artifact@v3.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 86.49%. Comparing base (2a91369) to head (53a46ae).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #253 +/- ## ======================================= Coverage 86.49% 86.49% ======================================= Files 18 18 Lines 2569 2569 ======================================= Hits 2222 2222 Misses 347 347 ``` | [Flag](https://app.codecov.io/gh/RedHatQE/widgetastic.core/pull/253/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=RedHatQE) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/RedHatQE/widgetastic.core/pull/253/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=RedHatQE) | `86.49% <ø> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=RedHatQE#carryforward-flags-in-the-pull-request-comment) to find out more.

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[digitronik]

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