Update all dependencies.

Also fixed linting failures from rubocop update.

Author: jamesiarmes

.github/config/branch_rubocop_linter_action.yml

@@ -12,10 +12,10 @@ check_name: "RuboCop Results"
 #   versions:
 #     - rubocop: 'latest'
 versions:
-  - rubocop: "1.36.0"
-  - rubocop-rails: "2.16.1"
-  - rubocop-performance: "1.15.0"
-  - rubocop-rspec: "2.13.2"
+  - rubocop: "1.50.2"
+  - rubocop-rails: "2.19.1"
+  - rubocop-performance: "1.17.1"
+  - rubocop-rspec: "2.20.0"
 
 # Description: RuboCop configuration file path relative to the workspace.
 # Valid options: A valid file path inside of the workspace.

.github/config/main_rubocop_linter_action.yml

@@ -12,10 +12,10 @@ check_name: "RuboCop Results"
 #   versions:
 #     - rubocop: 'latest'
 versions:
-  - rubocop: "1.36.0"
-  - rubocop-rails: "2.16.1"
-  - rubocop-performance: "1.15.0"
-  - rubocop-rspec: "2.13.2"
+  - rubocop: "1.50.2"
+  - rubocop-rails: "2.19.1"
+  - rubocop-performance: "1.17.1"
+  - rubocop-rspec: "2.20.0"
 
 # Description: RuboCop configuration file path relative to the workspace.
 # Valid options: A valid file path inside of the workspace.

.rubocop.yml

@@ -27,6 +27,9 @@ Naming/VariableNumber:
 RSpec/ExampleLength:
   Max: 40
 
+RSpec/IndexedLet:
+  Enabled: false
+
 # TODO: Reduce to the default (1).
 RSpec/MultipleExpectations:
   Max: 6