ci: Native publishing fixes

[OS-pedrogustavobilro]

Description

Found a few issues that caused the publishing of the plugin to Maven Central and CocoaPods to fail:

1. running the native publishing from the same workflow as npm publishing with semantic-release, found that the commit it was checking out was the one that existed when the GitHub action is triggered, and not the one after running semantic-release. This caused the workflow to try and publish a 8.0.0-next.X version to Maven Central / CocoaPods, which shouldn't happen.
2. A 8.0.0-next.3 version was published temporarily to CocoaPods (has since been removed), and right after that when I tried to re-run CocoaPods publishing the script was saying 8.0.0 already existed - basically an issue

This PR fixes those issues.

Other changes outside this PR

Also, the sonatype staging id was wrong for this repo (and capacitor-haptics) - updated the GitHub Action secret to fix this + There was an incorrect character in the signing key secret that also made release signing fail with Invalid key.

Both of these were changed for capacitor-haptics and capacitor-keyboard.

Context

https://outsystemsrd.atlassian.net/browse/RMET-4860

Type of changes

• Fix (non-breaking change which fixes an issue)
• Feature (non-breaking change which adds functionality)
• Refactor (cosmetic changes)
• Breaking change (change that would cause existing functionality to not work as expected)