fix: Italian translation

[luca-vercelli]

Reviewed Italian transalation.
I eliminated all "fuzzy" translations, and I ran msgfmt --check before submission.
Many messages are not translated yet.
Please notice I am not sure the POT file was up to date. Inside the file I read: POT-Creation-Date: 2025-04-29 12:34+0330

[korbit-ai]

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[bito-code-review]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 68.25%. Comparing base (37d58a4) to head (6ca5959).
⚠️ Report is 17 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff             @@
##           master   #36114       +/-   ##
===========================================
+ Coverage        0   68.25%   +68.25%     
===========================================
  Files           0      631      +631     
  Lines           0    45988    +45988     
  Branches        0     4987     +4987     
===========================================
+ Hits            0    31387    +31387     
- Misses          0    13346    +13346     
- Partials        0     1255     +1255     

Flag	Coverage Δ
hive	43.95% <ø> (?)
mysql	67.46% <ø> (?)
presto	47.50% <ø> (?)
python	68.23% <ø> (?)
sqlite	67.12% <ø> (?)
unit	100.00% <ø> (?)

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