[Security] Bump Rails dependencies from 6.0.3.3 to 6.0.3.4 (#1787)
[Security] Bump Rails dependencies from 6.0.3.3 to 6.0.3.4 (#1787)

Bumps [actionpack](https://github.com/rails/rails) from 6.0.3.3 to 6.0.3.4. **This update includes a security fix.**
- [Release notes](https://github.com/rails/rails/releases)
- [Changelog](https://github.com/rails/rails/blob/v6.0.3.4/actionpack/CHANGELOG.md)
- [Commits](https://github.com/rails/rails/compare/v6.0.3.3...v6.0.3.4)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>

Co-authored-by: dependabot-preview[bot] <6a4c1c4838f800d1998274cd5234e1f65c55e90c@users.noreply.github.com>
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