chore(shorebird_cli): use upstream googleapis_auth package

[bryanoltman]

Description

Fixes https://github.com/shorebirdtech/shorebird/issues/1944

Type of Change

• [ ] ✨ New feature (non-breaking change which adds functionality)
• [x] 🛠️ Bug fix (non-breaking change which fixes an issue)
• [ ] ❌ Breaking change (fix or feature that would cause existing functionality to change)
• [ ] 🧹 Code refactor
• [ ] ✅ Build configuration change
• [ ] 📝 Documentation
• [ ] 🗑️ Chore

[eseidel]

Does this bump our minimum Dart version?

[codecov[bot]]

Codecov Report

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

Project coverage is 100.00%. Comparing base (ccfeb87) to head (24dcbc9).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1952 +/- ## ========================================= Coverage 100.00% 100.00% ========================================= Files 174 174 Lines 5493 5493 ========================================= Hits 5493 5493 ``` | [Flag](https://app.codecov.io/gh/shorebirdtech/shorebird/pull/1952/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=shorebirdtech) | Coverage Δ | | |---|---|---| | [shorebird_cli](https://app.codecov.io/gh/shorebirdtech/shorebird/pull/1952/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=shorebirdtech) | `100.00% <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=shorebirdtech#carryforward-flags-in-the-pull-request-comment) to find out more.

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[eseidel]

We already pull our own Dart. I'm not sure what call we're making that's not using it: https://github.com/shorebirdtech/shorebird/blob/main/bin/shorebird https://github.com/shorebirdtech/shorebird/blob/main/third_party/flutter/bin/internal/shared.sh

[eseidel]

Yeah, we have our own Dart, we should just fix cases where we're using the wrong one.