Bump guiceVersion from 5.1.0 to 7.0.0

Bumps `guiceVersion` from 5.1.0 to 7.0.0.

Updates `com.google.inject:guice` from 5.1.0 to 7.0.0
- [Release notes](https://github.com/google/guice/releases)
- [Commits](google/guice@5.1.0...7.0.0)

Updates `com.google.inject.extensions:guice-assistedinject` from 5.1.0 to 7.0.0

---
updated-dependencies:
- dependency-name: com.google.inject:guice
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: com.google.inject.extensions:guice-assistedinject
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

build.gradle

@@ -18,7 +18,7 @@ repositories {
 dependencies {
     ext.autoValueVersion = '1.10.1'
     ext.jcloudsVersion = '2.5.0'
-    ext.guiceVersion = '5.1.0'
+    ext.guiceVersion = '7.0.0'
     ext.autoServiceVersion = '1.1.0'
     ext.guiceVersion = '5.0.1'