[Validator] Added Swedish translations
minor #11608 [Validator] Added Swedish translations (78) (Nyholm)

This PR was merged into the 2.6-dev branch.

Discussion
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[Validator] Added Swedish translations (78)

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | part of #11489
| License       | MIT

Added the missing Swedish translations into master.

Commits
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d2bd92f [Validator] Added Swedish translations