[templates] Upgrade bare templates to react-native 0.61.5 (#7634)

* [templates] Update expo-template-bare-minimum to rn 0.61.5

* [templates][android] Update expo-template-bare-typescript to rn 0.

[templates] Upgrade bare templates to react-native 0.61.5 (#7634)

* [templates] Update expo-template-bare-minimum to rn 0.61.5

* [templates][android] Update expo-template-bare-typescript to rn 0.61.5

* [templates] Upgrade gradle for bare templates

* [templates] Fix bare templates after upgrade

* [templates] Update bare-templates debug keystore

* [templates] Clean up babel files in bare templates

* [templates] Revert bare templates to Android targetSdkVersion 27

Tried using `targetSdkVersion = 28` because this was also used for RN61.5. However the android app wont start correctly as it doesn’t seem to be able to connect to the metro bundler

* [templates] Update expo deps in bare templates

* Revert "[templates] Revert bare templates to Android targetSdkVersion 27"

This reverts commit 9dff8b4cbe6beac1176d338b0f58631aeafd1e47.

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