Maintenance: Bump rubocop-performance from 1.11.3 to 1.11.4

Bumps [rubocop-performance](https://github.com/rubocop/rubocop-performance) from 1.11.3 to 1.11.4.
- [Release notes](https://github.com/rubocop/rubocop-performance/releases)
- [Changelog](https://github.com/rubocop/rubocop-performance/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop-performance@v1.11.3...v1.11.4)

Gemfile.lock

@@ -393,7 +393,7 @@ GEM
       omniauth-oauth2 (>= 1.4.0)
     openssl (2.2.0)
     parallel (1.20.1)
-    parser (3.0.1.1)
+    parser (3.0.2.0)
       ast (~> 2.4.1)
     pg (0.21.0)
     pluginator (1.5.0)
@@ -511,7 +511,7 @@ GEM
     rubocop-faker (1.1.0)
       faker (>= 2.12.0)
       rubocop (>= 0.82.0)
-    rubocop-performance (1.11.3)
+    rubocop-performance (1.11.4)
       rubocop (>= 1.7.0, < 2.0)
       rubocop-ast (>= 0.4.0)
     rubocop-rails (2.10.1)