feat: Use ubuntu-latest for Android tests

[Gustl22]

See: actions/runner-images#7191

Description

Due to lack of nested virtualization (hardware acceleration), the Android tests had to be executed on MacOS.
Since a GitHub update they should be executable on ubuntu-runners.

Checklist

• The title of my PR starts with a Conventional Commit prefix (fix:, feat:, refactor:,
  docs:, chore:, test:, ci: etc).
• I have read the Contributor Guide and followed the process outlined for submitting PRs.
• I have updated/added tests for ALL new/updated/fixed functionality.
• I have updated/added relevant documentation and added dartdoc comments with ///, where necessary.
• I have updated/added relevant examples in example.

Breaking Change

• Yes, this is a breaking change.
• No, this is not a breaking change.

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