Update actions/setup-python digest to f677139

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/setup-python	action	digest	39cd149 -> f677139

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[github-actions]

✅ Test Seed Generated Successfully

To apply the test seed:

1. Desktop: Launch the browser with --variations-pr=1203.
   Android: Set the command line to --variations-pr=1203 in debug menu, restart the browser.
   iOS: Set Variations PR to 1203 in Brave Core Switches debug menu, restart the browser.
2. Wait 5-10 seconds to fetch the seed.
3. Restart the browser to apply the seed.
4. Ensure Active Variations section at brave://version starts with the expected seed version (see below).

Seed Details

Parameter	Value
Version	pull/1203@454006eb6248f347d7d2c38b2c7828dc735b7c14
Uploaded	Wed, 04 Sep 2024 00:16:46 GMT
PR commit	990f34b
Base commit	620ff93
Merge commit	454006e
Serial number	0186e60af5b33b56435b2b1dc83fd85c