Updating stylelint and related libraries (#2244)

* Updated stylelint versions

* Updated precommit hook config to use new versions of stylelint and related libraries. Updated base.css for updated version of stylelint

* Reverted global function and color function changes since gulp doesn't recognize them

.pre-commit-config.yaml

@@ -67,10 +67,10 @@ repos:
       hooks:
           - id: stylelint
             additional_dependencies:
-                - 'stylelint@^13.8.0'
-                - 'stylelint-config-prettier@^8.0.2'
-                - 'stylelint-config-recommended@^3.0.0'
-                - 'stylelint-value-no-unknown-custom-properties@^4.0.0'
+                - 'stylelint@^16.2.0'
+                - 'stylelint-config-recommended@^14.0.0'
+                - 'stylelint-value-no-unknown-custom-properties@^6.0.1'
+                - 'stylelint-config-standard-scss@^13.0.0'
     - repo: https://github.com/aws-cloudformation/cfn-python-lint
       rev: v0.82.2
       hooks:

.stylelintrc.yaml

@@ -1,5 +1,6 @@
 extends:
     - stylelint-config-recommended
+    - stylelint-config-standard-scss
 
 plugins:
     - stylelint-value-no-unknown-custom-properties
@@ -8,3 +9,5 @@ rules:
     no-descending-specificity: null
     at-rule-no-unknown: null
     csstools/value-no-unknown-custom-properties: true
+    scss/dollar-variable-empty-line-before: null
+    property-no-vendor-prefix: null