l10n: vi: Updated translation for 2.47

[Nekosha]

No description provided.

[github-actions]

Errors and warnings found by git-po-helper in workflow #789:

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INFO [po/vi.po@b990f88]	5771 translated messages. 
INFO checking commits: 1 passed.                  
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INFO downloading pot file from https://github.com/git-l10n/pot-changes/raw/pot/master/po/git.pot 
------------------------------------------------------------------------------
ERROR [po/vi.po@b990f88]	1 new string(s) in 'po/git.pot', but not in your 'po/XX.po' 
ERROR [po/vi.po@b990f88]                           
ERROR [po/vi.po@b990f88]	  > po/git.pot:21514: this message is used but not defined in /tmp/402376593--vi.po 
ERROR [po/vi.po@b990f88]                           
ERROR [po/vi.po@b990f88]	You can download the latest "po/git.pot" file from: 
ERROR [po/vi.po@b990f88]                           
ERROR [po/vi.po@b990f88]		https://github.com/git-l10n/pot-changes/raw/pot/master/po/git.pot 
ERROR [po/vi.po@b990f88]                           
ERROR [po/vi.po@b990f88]	Please rebase your branch to the latest upstream branch, 
ERROR [po/vi.po@b990f88]	run "git-po-helper update po/XX.po" to update your po file, 
ERROR [po/vi.po@b990f88]	and translate the new strings in it. 
ERROR [po/vi.po@b990f88]                           

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

[jiangxin]

The release of Git 2.47.0-rc1 has added a new translatable message. Please update your translations.