bump gradle to 6.5

[dulmandakh]

Summary

Bump Gradle to 6.5 or latest version.

Changelog

[Android] [Changed] - bump Gradle to 6.5

Test Plan

RNTester builds and run as expected

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
ios	-	universal	809,568	0

Base commit: 976f51a

[analysis-bot]

Platform	Engine	Arch	Size (bytes)	Diff
android	hermes	arm64-v8a	6,755,647	0
android	hermes	armeabi-v7a	6,417,883	0
android	hermes	x86	7,140,908	0
android	hermes	x86_64	7,031,411	0
android	jsc	arm64-v8a	8,929,883	0
android	jsc	armeabi-v7a	8,584,505	0
android	jsc	x86	8,758,257	0
android	jsc	x86_64	9,334,382	0

Base commit: 976f51a

[dulmandakh]

@mdvacca Windows failure is not related to the change, but JS issue. I'm back 😎

[mdvacca]

LGTM, I'm importing this PR to test and land!

[facebook-github-bot]

@mdvacca has imported this pull request. If you are a Facebook employee, you can view this diff on Phabricator.

[react-native-bot]

This pull request was successfully merged by @dulmandakh in e559aee.

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