Use dependency management improvements in Gradle 7.0

[jingtang10]

Describe the Issue

for future reference, gradle 7.0 adds a much nicer way to define dependencies:

https://docs.gradle.org/7.0/release-notes.html#dependency-management-improvements

Originally posted by @yigit in https://github.com/google/android-fhir/pull/482#discussion_r636529647

Would you like to work on the issue? Maybe...

[FikriMilano]

@jingtang10 can I work on this?

[FikriMilano]

https://docs.gradle.org/7.0/userguide/upgrading_version_6.html#changes_7.0 https://docs.gradle.org/7.0/userguide/variant_attributes.html#sub:jvm_default_attributes

[jingtang10]

@FikriMilano so sorry I missed this - please feel free to go ahead with this

[FikriMilano]

No worries - thanks!

[FikriMilano]

cc @f-odhiambo

[omarismail94]

Closing this as we are at Gradle 8 now