Bump location from 6.0.2 to 7.0.0 in /hello_grpc_flutter

Bumps [location](https://github.com/Lyokone/flutterlocation) from 6.0.2 to 7.0.0.
- [Release notes](https://github.com/Lyokone/flutterlocation/releases)
- [Commits](Lyokone/flutterlocation@location-v6.0.2...location-v7.0.0)

---
updated-dependencies:
- dependency-name: location
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

hello_grpc_flutter/pubspec.yaml

@@ -26,7 +26,7 @@ dependencies:
   # https://pub.dev/packages/fixnum
   fixnum: ^1.1.0
   # https://pub.dev/packages/location
-  location: ^6.0.0
+  location: ^7.0.0
 dev_dependencies:
   flutter_test:
     sdk: flutter