Varbase 8.5.1: Update [CHANGELOG.md, UPDATE.md] files and filtered the code for Drupal 8 Coding Standard

Varbase 8.5.1 Release notes:

Highlighted important changes since Varbase 8.5.0:

• Issue #3000876: Update [Drupal core] from 8.5.7 to 8.6.1

• Issue #3001196: Enable [BigPipe] Drupal core module by default

Added since Varbase 8.5.0:

• No new features

Change since Varbase 8.5.0:

• Issue #3001196: Enable [BigPipe] Drupal core module by default

Updates since Varbase 8.5.0:

• Issue #3000876: Update [Drupal core] from 8.5.7 to 8.6.1
• Issue #3000907: Update [Views Bootstrap] from 3.x-dev ec4e787 to ^3.1
• Issue #3000924: Update [Search API] module from 8.1.9 to 8.1.10
• Issue #3000934: Update [Layout Builder Restrictions] module 8.1.1 to 8.1.2
• Issue #3000945: Update [Media entity Instagram] module from 8.2.0-alpha1 to 8.2.0-alpha2
• Issue #3000975: Update [Link Attributes widget] module from 8.1.3 to 8.1.5
• Issue #2999288: Update [Bootstrap] theme from ^8.3.12 to ^8.3.13

Fixes since Varbase 8.5.0:

• Issue #3000014 by mhawwari: Fix Better Login Input Label Alignment

Updating Varbase 8.5.0 to Varbase 8.5.1

The UPDATE.md file.
https://github.com/Vardot/varbase/blob/8.x-5.x/UPDATE.md

Updated Change log file:

https://github.com/Vardot/varbase/blob/8.x-5.x/CHANGELOG.md

Varbase Automated Functional Testing

https://github.com/Vardot/varbase/blob/8.x-5.x/tests/README.md

Varbase Gherkin features

https://github.com/Vardot/varbase/blob/8.x-5.x/tests/features/varbase/RE...