fixup: downgrade ESLint to v8 while TS plugin catches up

.eslintrc.yaml

@@ -9,7 +9,7 @@ extends:
   - "plugin:jsdoc/recommended-typescript-error"
   - "plugin:n/recommended"
   - "plugin:promise/recommended"
-  - "plugin:sonarjs/recommended"
+  - "plugin:sonarjs/recommended-legacy"
   - "plugin:unicorn/recommended"
   - "prettier"
 

.github/dependabot.yaml

@@ -19,6 +19,11 @@ updates:
       development:
         dependency-type: "development"
 
+   # TODO(mcous, 2024-07-06): update to ESLint v9 + flat config
+  ignore:
+    - dependency-name: 'eslint'
+      versions: ['>=9']
+
   # Update GitHub Actions dependencies
   - package-ecosystem: "github-actions"
     directory: "/"