Bumped version to 1.3.5

[rhelmer]

Checklist for reviewer:

• [x] The description should reference a bug or github issue, if relevant.
• [x] There must be a CHANGELOG.md entry for any non-test change.
• [x] Any change to the NPM commands must be carefully reviewed to make sure it won't break the Add-ons pipeline.
• [x] Any version increase must follow the release process.