l10n: tr: Update Turkish translations for 2.50

[bitigchi]

No description provided.

[github-actions]

Warnings found by git-po-helper in workflow #980:

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INFO [po/tr.po@2140ff4]	5819 translated messages. 
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WARNING [po/tr.po@2140ff4]	mismatched patterns: --default, --default=, 
WARNING [po/tr.po@2140ff4]	>> msgid: --default= cannot be used with --all or --url= 
WARNING [po/tr.po@2140ff4]	>> msgstr: --default=, --all veya --url= ile kullanılamaz 
WARNING [po/tr.po@2140ff4]                           
WARNING [po/tr.po@2140ff4]	mismatched patterns: --exclude-hidden, --exclude-hidden=, 
WARNING [po/tr.po@2140ff4]	>> msgid: --exclude-hidden= passed more than once 
WARNING [po/tr.po@2140ff4]	>> msgstr: --exclude-hidden=, birden çok kez geçirildi 
WARNING [po/tr.po@2140ff4]                           
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 

[jiangxin]

We are working on l10n for Git 2.50, not 2.45. So s/2.45/2.50/ for both your commit message and the title of this PR.