Revert "[camera]: Bump robolectric from 4.5 to 4.8.2 in /packages/camera/camera_android/android (#6329)"

This reverts commit c04e5a36b51ebe6257fc1c71c43895355419e95e.
diff --git a/packages/camera/camera_android/android/build.gradle b/packages/camera/camera_android/android/build.gradle
index 89156b6..b060181 100644
--- a/packages/camera/camera_android/android/build.gradle
+++ b/packages/camera/camera_android/android/build.gradle
@@ -63,5 +63,5 @@
     testImplementation 'junit:junit:4.13.2'
     testImplementation 'org.mockito:mockito-inline:4.7.0'
     testImplementation 'androidx.test:core:1.4.0'
-    testImplementation 'org.robolectric:robolectric:4.8.2'
+    testImplementation 'org.robolectric:robolectric:4.5'
 }