l10n: vi: Updated translation for 2.45 (round 1)

[Nekosha]

This does not include the TEAMS change in #762.

[github-actions]

Errors and warnings found by git-po-helper in workflow #638:

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INFO [po/vi.po@8fa9d42]	5472 translated messages, 180 untranslated messages. 
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ERROR commit 8fa9d42: no blank line between subject and body of commit message 
------------------------------------------------------------------------------
INFO [po/vi.po@5a1a9c6]	5467 translated messages, 184 untranslated messages. 
INFO checking commits: 1 passed, 1 failed.        
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INFO downloading pot file from https://github.com/git-l10n/pot-changes/raw/pot/master/po/git.pot 
------------------------------------------------------------------------------
WARNING [po/vi.po@8fa9d42]	180 untranslated string(s) in your 'po/XX.po' 
WARNING [po/vi.po@8fa9d42]                           
WARNING [po/vi.po@8fa9d42]	  > po/XX.po:3107: this message is untranslated 
WARNING [po/vi.po@8fa9d42]	  > po/XX.po:3126: this message is untranslated 
WARNING [po/vi.po@8fa9d42]	  > po/XX.po:4153: this message is untranslated 
WARNING [po/vi.po@8fa9d42]	  > ...                   
WARNING [po/vi.po@8fa9d42]                           

ERROR: fail to execute "git-po-helper check-commits"

[Nekosha]

Sorry, force-pushed to fix email addresses.

[Nekosha]

Closing, reopening with a different branch.