JS-1607 Remove node16 plugin test from CI and readme (#6837)

Author: zglicz

.github/workflows/build.yml

@@ -428,9 +428,6 @@ jobs:
           - eslint-version: 8
             node-version: '18.18.0'
             node-label: 'min supported'
-          - eslint-version: 8
-            node-version: '16.20.2'
-            node-label: 'node 16'
     steps:
       - *checkout
       - uses: jdx/mise-action@v4.0.1

packages/analysis/src/jsts/rules/README.md

@@ -23,7 +23,7 @@ If you are a [SonarQube Server](https://www.sonarsource.com/products/sonarqube/)
 
 The prerequisites for using this plugin depend on the ESLint version you are using:
 
-- For ESLint 8, you need Node.js version >= 16.
+- For ESLint 8, you need Node.js version >= 18.
 - For ESLint 9, you need Node.js version that complies with (^18.18.0 || ^20.9.0 || >=21).
 
 ## Installation