Merge pull request #32 from Clearcals/master

Lock google-cloud-kit dependency version at `1.0.0-rc.9` until we bump `swift-tools` and `macOS` version to `5.7` and `v13` respectively

Author: Andrewangeta

Package.swift

@@ -29,7 +29,7 @@ let package = Package(
     ],
     dependencies: [
         .package(url: "https://github.com/vapor/vapor.git", from: "4.0.0"),
-        .package(url: "https://github.com/vapor-community/google-cloud-kit.git", from: "1.0.0-rc.7")
+        .package(url: "https://github.com/vapor-community/google-cloud-kit.git", .exact("1.0.0-rc.9")),
     ],
     targets: [
         .target(