update workflow permissions

[devoncarew]

• update workflow permissions

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[devoncarew]

The failure on test_arch is:

Installing the windows-ia32 Dart SDK version 3.8.1 from the stable (release) channel.
https://storage.googleapis.com/dart-archive/channels/stable/release/3.8.1/sdk/dartsdk-windows-ia32-release.zip ...
Error: Error: Unexpected HTTP response: 404

with I assume is the issue that @mit-mit is looking to solve with #154 / #155.

[mit-mit]

What is the reason for updating permissions?