Bump sinatra from `9057b70` to `7a5c499`
Bump sinatra from `9057b70` to `7a5c499`

Bumps [sinatra](https://github.com/sinatra/sinatra) from `9057b70` to `7a5c499`.
- [Release notes](https://github.com/sinatra/sinatra/releases)
- [Commits](https://github.com/sinatra/sinatra/compare/9057b70664787221512a2f751e2e5c73eab3613c...7a5c499f0e6099137fd1cb4ee20178af2a125d47)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
dwilkie/twilreapi,dwilkie/twilreapi