[google_sign_in] Migrate maven repo from jcenter to mavenCentral (#3914)

diff --git a/packages/google_sign_in/google_sign_in/CHANGELOG.md b/packages/google_sign_in/google_sign_in/CHANGELOG.md
index aa62f30..ecece1b 100644
--- a/packages/google_sign_in/google_sign_in/CHANGELOG.md
+++ b/packages/google_sign_in/google_sign_in/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 5.0.4
+
+* Migrate maven repo from jcenter to mavenCentral.
+
 ## 5.0.3
 
 * Fixed links in `README.md`.
diff --git a/packages/google_sign_in/google_sign_in/android/build.gradle b/packages/google_sign_in/google_sign_in/android/build.gradle
index a1df23e..a112470 100644
--- a/packages/google_sign_in/google_sign_in/android/build.gradle
+++ b/packages/google_sign_in/google_sign_in/android/build.gradle
@@ -4,7 +4,7 @@
 buildscript {
     repositories {
         google()
-        jcenter()
+        mavenCentral()
     }
 
     dependencies {
@@ -15,7 +15,7 @@
 rootProject.allprojects {
     repositories {
         google()
-        jcenter()
+        mavenCentral()
     }
 }
 
diff --git a/packages/google_sign_in/google_sign_in/example/android/build.gradle b/packages/google_sign_in/google_sign_in/example/android/build.gradle
index 541636c..e101ac0 100644
--- a/packages/google_sign_in/google_sign_in/example/android/build.gradle
+++ b/packages/google_sign_in/google_sign_in/example/android/build.gradle
@@ -1,7 +1,7 @@
 buildscript {
     repositories {
         google()
-        jcenter()
+        mavenCentral()
     }
 
     dependencies {
@@ -12,7 +12,7 @@
 allprojects {
     repositories {
         google()
-        jcenter()
+        mavenCentral()
     }
 }
 
diff --git a/packages/google_sign_in/google_sign_in/pubspec.yaml b/packages/google_sign_in/google_sign_in/pubspec.yaml
index 9c0159c..c9d110f 100644
--- a/packages/google_sign_in/google_sign_in/pubspec.yaml
+++ b/packages/google_sign_in/google_sign_in/pubspec.yaml
@@ -2,7 +2,7 @@
 description: Flutter plugin for Google Sign-In, a secure authentication system
   for signing in with a Google account on Android and iOS.
 homepage: https://github.com/flutter/plugins/tree/master/packages/google_sign_in/google_sign_in
-version: 5.0.3
+version: 5.0.4
 
 flutter:
   plugin: