Internationalise a previously hardcoded 'and'

[hugovk]

Fixes #161.

Changes proposed in this pull request:

• There was a hardcoded " and "
• Internationalise it instead
• Add translations for those I can, leave empty for the others (via scripts/update-translations.sh)

[codecov-commenter]

Codecov Report

Merging #163 into master will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master      #163   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            9         9           
  Lines          556       560    +4     
=========================================
+ Hits           556       560    +4     

Flag	Coverage Δ
#GHA_Ubuntu	100.00% <100.00%> (ø)
#GHA_Windows	100.00% <100.00%> (ø)
#GHA_macOS	100.00% <100.00%> (ø)

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Impacted Files	Coverage Δ
src/humanize/i18n.py	100.00% <ø> (ø)
src/humanize/time.py	100.00% <100.00%> (ø)
tests/test_i18n.py	100.00% <100.00%> (ø)

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