Bump github.com/stretchr/testify from 1.8.4 to 1.9.0 in /ruledocsgen

Bumps [github.com/stretchr/testify](https://github.com/stretchr/testify) from 1.8.4 to 1.9.0.
- [Release notes](https://github.com/stretchr/testify/releases)
- [Commits](stretchr/testify@v1.8.4...v1.9.0)

---
updated-dependencies:
- dependency-name: github.com/stretchr/testify
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Diff for: ruledocsgen/go.mod

@@ -11,7 +11,7 @@ require (
 	github.com/arduino/arduino-lint v0.0.0
 	github.com/arduino/go-paths-helper v1.12.0
 	github.com/olekukonko/tablewriter v0.0.5
-	github.com/stretchr/testify v1.8.4
+	github.com/stretchr/testify v1.9.0
 )
 
 require (