fix: use correct V8 tag for major updates

[targos]

Sometimes there might be additional tags with suffix such as -pgo

[targos]

Fixes: https://github.com/nodejs/node-v8/actions/runs/4279399575/jobs/7450060217

[STARTED] Checkout V8 branch
[FAILED] Command failed with exit code 128: git branch 11.3.10-pgo origin/11.3.10-pgo
[FAILED] fatal: not a valid object name: 'origin/11.3.10-pgo'
[FAILED] Command failed with exit code 128: git branch 11.3.10-pgo origin/11.3.10-pgo
[FAILED] fatal: not a valid object name: 'origin/11.3.10-pgo'
✖ Command failed with exit code 128: git branch 11.3.10-pgo origin/11.3.10-pgo
fatal: not a valid object name: 'origin/11.3.10-pgo'

[codecov]

Codecov Report

Base: 83.41% // Head: 83.41% // No change to project coverage 👍

Coverage data is based on head (855e84d) compared to base (64f6a1c).
Patch has no changes to coverable lines.

Additional details and impacted files

@@ Coverage Diff @@## main #675 +/- ##
=======================================
Coverage 83.41% 83.41% =======================================
Files 37 37 Lines 4136 4136 =======================================
Hits 3450 3450 Misses 686 686 

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