Update dependencies to support Stylelint 16 (#147)

Author: kristerkari

.github/workflows/lint.yml

@@ -10,7 +10,7 @@ on:
 
 env:
   FORCE_COLOR: 2
-  NODE: 18
+  NODE: 20
 
 permissions:
   contents: read

.github/workflows/test.yml

@@ -22,7 +22,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: [14, 16, 18, 20]
+        node: [20]
         os: [ubuntu-latest, windows-latest, macos-latest]
 
     steps: