tools: increase the maximum number of files to lint per worker

This increases the maximum number of files to lint per worker from
40 to 60 files. This should ideally reduce the total linting time
a tiny bit.

PR-URL: #27670
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Refael Ackermann (רפאל פלחי) <refack@gmail.com>
Reviewed-By: Daijiro Wachi <daijiro.wachi@gmail.com>
Reviewed-By: Ujjwal Sharma <usharma1998@gmail.com>

tools/lint-js.js

@@ -3,7 +3,7 @@
 const rulesDirs = ['tools/eslint-rules'];
 const extensions = ['.js', '.md'];
 // This is the maximum number of files to be linted per worker at any given time
-const maxWorkload = 40;
+const maxWorkload = 60;
 
 const cluster = require('cluster');
 const path = require('path');