[polari] lint: Sync with gjs

[Marge Bot <marge-bot src gnome org>]

commit 336000ad4aecd3bb62133675937ccac0b8c66845
Author: Florian Müllner <fmuellner gnome org>
Date:   Tue Feb 15 00:45:41 2022 +0100

    lint: Sync with gjs
    
    This is needed for eslint to accept class fields.
    
    Part-of: <https://gitlab.gnome.org/GNOME/polari/-/merge_requests/243>

 lint/eslintrc-gjs.yml | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)
---
diff --git a/lint/eslintrc-gjs.yml b/lint/eslintrc-gjs.yml
index 26bd8c74..97e728f9 100644
--- a/lint/eslintrc-gjs.yml
+++ b/lint/eslintrc-gjs.yml
@@ -2,8 +2,7 @@
 # SPDX-License-Identifier: MIT OR LGPL-2.0-or-later
 # SPDX-FileCopyrightText: 2018 Claudio André <claudioandre br gmail com>
 env:
-  es6: true
-  es2020: true
+  es2021: true
 extends: 'eslint:recommended'
 plugins:
   - jsdoc
@@ -86,7 +85,10 @@ rules:
   linebreak-style:
     - error
     - unix
-  lines-between-class-members: error
+  lines-between-class-members:
+    - error
+    - always
+    - exceptAfterSingleLine: true
   max-nested-callbacks: error
   max-statements-per-line: error
   new-parens: error
@@ -260,5 +262,9 @@ globals:
   TextEncoder: readonly
   TextDecoder: readonly
   console: readonly
+  setTimeout: readonly
+  setInterval: readonly
+  clearTimeout: readonly
+  clearInterval: readonly
 parserOptions:
-  ecmaVersion: 2020
+  ecmaVersion: 2022