chore: upgrade build-tools version (#1768)

## Checklist

- [x] I have read the [contribution
guidelines](https://github.com/ooni/probe-cli/blob/master/CONTRIBUTING.md)
- [x] reference issue for this pull request: #1767 
- [ ] if you changed anything related to how experiments work and you
need to reflect these changes in the ooni/spec repository, please link
to the related ooni/spec pull request: <!-- add URL here -->
- [ ] if you changed code inside an experiment, make sure you bump its
version number

<!-- Reminder: Location of the issue tracker:
https://github.com/ooni/probe -->

## Description

This upgrades mobile android deps to the latest version

Author: DecFox

MOBILE/android/ensure

@@ -2,7 +2,7 @@
 
 set -euo pipefail
 
-__install_extra="build-tools;35.0.0 platforms;android-36"
+__install_extra="build-tools;36.0.0 platforms;android-36"
 
 __ndk_version=$(cat ./NDKVERSION)