Updated channel and documentation to Rubocop v0.80.0 (#225)

* Updated channel and documentation to Rubocop v0.79.0 (#222)

* Bumps 'rubocop' Dependency to v0.80.0

* Updates Scraped Documentation

* Handles Edge-Case in Documentation Parsing Logic

If a cop's documentation grows too long (e.g. Style/BlockDelimiters), it will
run afoul of the Metrics/ClassLength cop, which will need to be disabled. This
breaks the parsing. Adjusting the initial gsub's regexp pattern appears to
resolve this edge-case.

* Minor Delinting

* Fixes Namespace Warnings in Config Files

* Possible Fix for Config Upgrader Spec

I'm not sure what the desired outcome here is, actually.

* Updates ConfigUpgrader Spec

Per feedback from @filipesperandio, the config upgrader spec will now exercise
the upgrades with the new cops enabled, rather than disabled.

* Removes New Cops from Base Config

Co-authored-by: Filipe Esperandio <filipesperandio@gmail.com>

base_rubocop.yml

@@ -102,15 +102,6 @@ Style/Next:
 Style/ModuleFunction:
   Enabled: false
 
-Style/HashEachMethods:
-  Enabled: false
-
-Style/HashTransformKeys:
-  Enabled: false
-
-Style/HashTransformValues:
-  Enabled: false
-
 ################################################################################
 # Specs - be more lenient on length checks and block styles
 ################################################################################