Create validators.lv.xlf

Latvian translation of validators
merged branch Pendrokar/patch-1 (PR #7073)

This PR was submitted for the master branch but it was merged into the 2.2 branch instead (closes #7073).

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3bc0567 Create validators.lv.xlf

Discussion
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Create validators.lv.xlf, latvian translation

Latvian translation of validators