Bump leakCanaryVersion from 2.6 to 2.7
Bump leakCanaryVersion from 2.6 to 2.7

Bumps `leakCanaryVersion` from 2.6 to 2.7.

Updates `leakcanary-android` from 2.6 to 2.7
- [Release notes](https://github.com/square/leakcanary/releases)
- [Changelog](https://github.com/square/leakcanary/blob/main/docs/changelog.md)
- [Commits](https://github.com/square/leakcanary/compare/v2.6...v2.7)

Updates `plumber-android` from 2.6 to 2.7
- [Release notes](https://github.com/square/leakcanary/releases)
- [Changelog](https://github.com/square/leakcanary/blob/main/docs/changelog.md)
- [Commits](https://github.com/square/leakcanary/compare/v2.6...v2.7)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
rsudev/c-geo-opensource,tobiasge/cgeo,cgeo/cgeo,matej116/cgeo,cgeo/cgeo,matej116/cgeo,cgeo/cgeo,matej116/cgeo,rsudev/c-geo-opensource,tobiasge/cgeo,tobiasge/cgeo,rsudev/c-geo-opensource,cgeo/cgeo