Update latvian and russian translations

[zucha]

Questions	Answers
Description?	Added latvian translations to Psgdpr::$presetMessageAccountCreation , replaced russian translation, because it was not correct one.
Type?	bug fix & improvement
BC breaks?	no
Deprecations?	no
Fixed ticket?	no
Sponsor company
How to test?	On checkout page, you need to open manually. If you use Russian language or Latvian language you should see the correct translatations for "I agree to the terms and conditions and the privacy policy" message.