Stop using Internet#username() interally (#1671)

Author: kingthorin

src/main/java/net/datafaker/providers/base/Internet.java

@@ -48,7 +48,7 @@ public String username() {
  }
 
  public String emailAddress() {
- return emailAddress(username());
+ return emailAddress(faker.credentials().username());
  }
 
  /**
@@ -76,7 +76,7 @@ public String emailAddress(String name) {
  }
 
  public String safeEmailAddress() {
- return safeEmailAddress(username());
+ return safeEmailAddress(faker.credentials().username());
  }
 
  /**

src/main/java/net/datafaker/providers/base/Name.java

@@ -154,6 +154,6 @@ public String title() {
  @Deprecated(since = "2.5.0", forRemoval = true)
  @SuppressWarnings("removal")
  public String username() {
- return faker.internet().username();
+ return faker.credentials().username();
  }
 }